Fill in the numbers according to the rules: 1,5,11,19,29, (), 55,

Fill in the numbers according to the rules: 1,5,11,19,29, (), 55,

1,5,11,19,29,(41 ),55
The difference between the two is equal

What are the rules of 5, 11, 19 and 29

5=2×3-1=(1+1)×(1+2)-1
11=3×4-1=(2+1)×(2+2)-1
19=4×5-1=(3+1)×(3+2)-1
29=5×6-1=(4+1)×(4+2)-1
Rule: starting from the first term, each term is equal to the product of the number of terms + 1 and the number of terms + 2, and then minus 1
Item n = (n + 1) (n + 2) - 1 = n & # 178; + 3N + 1

Find the law 5 11 19 29

(n+1)^2+n

Fill in the blanks according to the rule: 1 / 1, 5 / 2, 11 / 3, 19 / 4, 29 / 5. What is the 100th number and what is the nth number?

The law of denominator is: 1,2,3,4,5,6
The molecular law is n & sup2; + n-1
So, the denominator of the 100th number is 100, and the numerator is 10099,