A325736 First term of n-th difference sequence of (floor(2e*k)), k >= 0.

5, 0, 1, -3, 7, -15, 31, -63, 126, -245, 455, -791, 1253, -1715, 1715, 0, -6419, 24157, -67081, 162925, -364609, 767977, -1535953, 2922679, -5273325, 8931521, -13886641, 18775981, -18399241, -2035799, 79594559, -300540195, 855744647, -2151510735, 5025003039

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. A325664.

Programs

Mathematica

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