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A325840
First term of n-th difference sequence of (round(k*sqrt(2))), k >= 0.
1
1, 1, -2, 4, -8, 15, -25, 35, -35, 0, 126, -462, 1253, -2989, 6615, -13867, 27734, -52921, 95863, -163115, 255493, -352716, 379050, -134596, -828875, 3407821, -9217717, 20837509, -41675018, 74480265, -116145145, 143502875, -78990635, -286097760, 1453179125
OFFSET
1,3
LINKS
MATHEMATICA
Table[First[Differences[Table[Round[Sqrt[2]*n], {n, 0, 50}], n]], {n, 1, 50}]
CROSSREFS
Cf. A325664.
Sequence in context: A305992 A082562 A159243 * A347764 A324740 A262146
KEYWORD
easy,sign
AUTHOR
Clark Kimberling, Jun 09 2019
STATUS
approved