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A017080
a(n) = (8*n + 1)^4.
1
1, 6561, 83521, 390625, 1185921, 2825761, 5764801, 10556001, 17850625, 28398241, 43046721, 62742241, 88529281, 121550625, 163047361, 214358881, 276922881, 352275361, 442050625, 547981281, 671898241
OFFSET
0,2
FORMULA
G.f.: -(1 + 6556*x + 50726*x^2 + 38620*x^3 + 2401*x^4)/(x-1)^5. - R. J. Mathar, Jul 14 2016
PROG
[(8*n+1)^4: n in [0..40]]; // Vincenzo Librandi, Jul 11 2011
CROSSREFS
Sequence in context: A043456 A255114 A255629 * A017164 A017380 A017500
KEYWORD
nonn,easy
STATUS
approved