-5,2, - 4.5,8, - 12.5,18

-5,2, - 4.5,8, - 12.5,18


Add 1.5 2.5 3.5 4.5 5.5 at the beginning. Add (n-1) + 0.5 to the nth bit, and add (1 + n-1) * (n-1) / 2 + 0.5 * (n-1) = (n + 1) * (n-1) / 2, so the nth bit is 0.5 + (n + 1) * (n-1) / 2 = n ^ 2 / 2



(1): 36.9,34.6,32.3, () () (2) 2.3,4.6,6.9, () ()


36.9,34.6,32.3,（30）,（27.7）.
2.3,4.6,6.9,（9.2）,（11.5）.

Elden Ring Premiere

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