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A325674
First term of n-th difference sequence of (floor(k*r)), r = sqrt(8), k >= 0.
3
2, 1, -1, 1, -1, 0, 5, -20, 55, -125, 251, -462, 803, -1364, 2365, -4367, 8735, -18564, 40409, -87380, 184603, -379049, 758099, -1486674, 2884775, -5592404, 10919089, -21572459, 43144919, -87087000, 176565485, -357913940, 723002335, -1453179125, 2906358250
OFFSET
1,1
LINKS
MATHEMATICA
Table[First[Differences[Table[Floor[Sqrt[8]*n], {n, 0, 30}], n]], {n, 0, 50}]
CROSSREFS
KEYWORD
easy,sign
AUTHOR
Clark Kimberling, May 15 2019
STATUS
approved