A325740 First term of n-th difference sequence of (floor(2*Pi*k)), k >= 0.

6, 0, 0, 1, -4, 10, -20, 36, -64, 120, -239, 484, -946, 1716, -2794, 3872, -3872, 1, 14160, -52478, 143716, -345400, 767976, -1613128, 3226257, -6148960, 11119030, -18874260, 29414650, -39955040, 39955040, 1, -151615948, 575723786, -1611404740, 3936821260

Offset: 1

Author

Clark Kimberling, May 23 2019

Keywords

• easy
• sign

Links

• Clark Kimberling, Table of n, a(n) for n = 1..200

Crossrefs

Cf. A019669, A325664. Inverse binomial transform of A038130.

Programs

Mathematica

Table[First[Differences[Table[Floor[2Pi*n], {n, 0, 50}], n]], {n, 1, 50}]