A325842 First term of n-th difference sequence of (round(k*sqrt(5))), k >= 0.

2, 0, 1, -3, 6, -10, 16, -28, 56, -120, 256, -528, 1056, -2080, 4096, -8128, 16256, -32640, 65535, -131308, 262446, -523260, 1039720, -2053600, 4014856, -7726160, 14539590, -26553320, 46611620, -77558760, 119394740, -161230720, 161230720, 0, -623001635

Offset

1,1

Links

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

Mathematica

Table[First[Differences[Table[Round[Sqrt[5]*n], {n, 0, 50}], n]], {n, 1, 50}]

Crossrefs

Cf. A325664.

Sequence in context: A267901 A276561 A325746 * A153506 A325670 A271701

Adjacent sequences: A325839 A325840 A325841 * A325843 A325844 A325845

Keyword

easy,sign

Author

Clark Kimberling, Jun 09 2019

Status

approved