login
A325844
First term of n-th difference sequence of (round(k*tau)), tau = golden ratio = (1+sqrt(5))/2, k >= 0.
1
2, -1, 2, -4, 8, -15, 25, -35, 36, -10, -70, 230, -460, 624, -260, -1820, 8256, -24328, 59672, -130360, 260720, -483648, 837904, -1362704, 2098175, -3124550, 4732481, -7946068, 15874937, -36829014, 90866599, -222462944, 523003139, -1166803110, 2460658729
OFFSET
1,1
LINKS
MATHEMATICA
Table[First[Differences[Table[Round[GoldenRatio*n], {n, 0, 50}], n]], {n, 1, 50}]
CROSSREFS
Sequence in context: A138380 A016013 A193384 * A049903 A325665 A325843
KEYWORD
easy,sign
AUTHOR
Clark Kimberling, Jun 09 2019
STATUS
approved