A325735 First term of n-th difference sequence of (floor(-k*e)), k >= 0.

-3, 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

1,1

Comments

Inverse binomial transform of A121384 (values negated). - R. J. Mathar, Jun 17 2019

Links

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

Mathematica

Table[First[Differences[Table[Floor[-E*n], {n, 0, 50}], n]], {n, 1, 50}]

Crossrefs

Cf. A325664.

Sequence in context: A035630 A126723 A325846 * A235794 A349911 A090030

Adjacent sequences: A325732 A325733 A325734 * A325736 A325737 A325738

Keyword

easy,sign

Author

Clark Kimberling, May 20 2019

Status

approved