Find a general formula of the following sequence, 1, - 1.2. - 3.42,1 / 2. - 4 / 5.9/10. - 16 / 17 (1) -1.2 .-3 .4 (2) 1/2.-4/5.9/10.-16/17

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• 1. Find a general formula of the following sequence: 3 / 2, 5 / 4, 9 / 16, 17 / 256
• 2. Sequence 3, 5, 9, 17, 33 The general formula of an is equal to () A. 2nB. 2n+1C. 2n-1D. 2n+1
• 3. （1）3,5,9,17,33,…… ；（2）0,1,0,1…… Write the general formula of the sequence And (2) 2 / 3, 4 / 15, 6 / 35, 8 / 63, 100 / 99 ；（3）0,1,0,1,0,1,
• 4. 3.5.9.17.33. General term formula of sequence
• 5. General term formula of sequence 1,5,7,17,31,65
• 6. () urgent!) sequence 4, - 1, 10 / 17, - 13 / 31, 16 / 49 The general term formula of
• 7. Using n to express the general term formula of sequence 11,13,15,17,19
• 8. How to find the sequence 7,9,13,19 by guessing ideas (analysis method) The general term formula of Is there any formula or something like that An = an + BN and so on
• 9. What is the general term formula of sequence 1,4,13,40121 Such as the title
• 10. General term formula of sequence 4,13,40121 4.13.40.121 . I know that each term is the first term * 3 + 1, but I want the general term formula not the recursive formula
• 11. Sequence 1 / 2, - 4 / 5,9 / 10, - 16 / 17,25 / 26 A general term formula of
• 12. A general formula of sequence 2, - 5.10, - 17
• 13. Sequence 1, 5, 14, 30, 55, 91 The 12th number in is______ ．
• 14. Pyramid sequence: 1,5,14,30,55,91 Each term of the pyramid can be represented by a pyramid shaped lattice, so some people call it a pyramid sequence
• 15. What is x = in sequence 1.1.2.3.5.8.x.21.34.55? Write about the process, thank you!
• 16. 1,2,3,5,8,13,21,34,55,89,134…… “1,2,35,8,13,21,34,55,89,134……” This is an interesting Fibonacci sequence in mathematics. The main characteristics of this sequence are as follows:_________________________________ .
• 17. 1. 2, 3, 5, 8, 13, 21, 34, 55, 89, 144. These are interesting Fibo Series in numbers The most important feature of secondary number is (to describe it in one's own language)
• 18. The famous Fibonacci sequence: 1,1,2,3,5,8,13,21,34,55... If you carefully observe the sequence, what is the 11th number? What is the rule?
• 19. In mathematics, there is a series called Fibonacci series: 0 1 2 3 5 8 13 21 34 55 89 144 These sequences, the number 0, the second number 1, from the third number, each number is exactly the sum of the first two values. String number, how much is the remainder of the 2014 number divided by 3
• 20. 1, - 3,1, - 3 general term formula