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A111112
a(n) = 412*n^6 - 408*n^5 - 1130*n^4 - 360*n^3 + 2368*n^2 - 912*n + 15*(1 - (-1)^n).
0
0, 0, 0, 118560, 991680, 4465920, 14587200, 38887200, 89965440, 187368960, 359767680, 647427360, 1104978240, 1804481280, 2838790080, 4325210400, 6409455360, 9269898240, 13122120960, 18223760160, 24879648960, 33447256320, 44342422080, 58045389600, 75107134080, 96155988480, 121904565120
OFFSET
0,4
MATHEMATICA
Table[412n^6-408n^5-1130n^4-360n^3+2368n^2-912n+15(1-(-1)^n), {n, 0, 30}] (* Harvey P. Dale, Jul 08 2020 *)
CROSSREFS
Sequence in context: A346141 A235837 A235832 * A145306 A250370 A202285
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Oct 14 2005
EXTENSIONS
More terms from Georg Fischer, Feb 23 2021
STATUS
approved