A325729 - OEIS

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A325729

First term of n-th difference sequence of (floor(k*r)), r = sqrt(1/2), k >= 0.

2

0, 1, -1, 0, 3, -9, 18, -27, 27, 1, -92, 309, -771, 1716, -3627, 7449, -14897, 28764, -52921, 91239, -143718, 196197, -196197, 0, 737817, -2785484, 7758154, -18894735, 42409968, -89718894, 180879813, -349599492, 650139687, -1166803109, 2028578278

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,5

LINKS

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

MATHEMATICA

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

CROSSREFS

Sequence in context: A123877 A057681 A103312 * A159794 A352643 A100967

Adjacent sequences: A325726 A325727 A325728 * A325730 A325731 A325732

KEYWORD

easy,sign

AUTHOR

Clark Kimberling, May 19 2019

STATUS

approved