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A325667
First term of n-th difference sequence of (floor(k*r)), r = -sqrt(3), k >= 0.
3
-2, 0, 0, 1, -4, 10, -20, 36, -64, 120, -240, 496, -1024, 2080, -4159, 8240, -16248, 31824, -61403, 115292, -207670, 352716, -550430, 748144, -748144, 0, 2848366, -10897032, 30955332, -77558759, 181129040, -404458736, 875889376, -1855921143, 3870685664
OFFSET
1,1
LINKS
MATHEMATICA
Table[First[Differences[Table[Floor[-Sqrt[3]*n], {n, 0, 50}], n]], {n, 1, 50}]
CROSSREFS
Sequence in context: A258256 A361290 A285638 * A067310 A369321 A122890
KEYWORD
easy,sign
AUTHOR
Clark Kimberling, May 13 2019
STATUS
approved