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A017247
a(n) = (9*n + 7)^3.
1
343, 4096, 15625, 39304, 79507, 140608, 226981, 343000, 493039, 681472, 912673, 1191016, 1520875, 1906624, 2352637, 2863288, 3442951, 4096000, 4826809, 5639752, 6539203, 7529536, 8615125
OFFSET
0,1
FORMULA
G.f.: (343 + 2724*x + 1299*x^2 + 8*x^3)/(x-1)^4. - R. J. Mathar, Mar 20 2018
MATHEMATICA
(9*Range[0, 30]+7)^3 (* or *) LinearRecurrence[{4, -6, 4, -1}, {343, 4096, 15625, 39304}, 30] (* Harvey P. Dale, Mar 05 2023 *)
PROG
(Magma) [(9*n+7)^3: n in [0..35]]; // Vincenzo Librandi, Jul 27 2011
CROSSREFS
Sequence in context: A267321 A134738 A017151 * A017355 A167727 A017475
KEYWORD
nonn,easy
STATUS
approved