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A017140
a(n) = (8*n+6)^4.
2
1296, 38416, 234256, 810000, 2085136, 4477456, 8503056, 14776336, 24010000, 37015056, 54700816, 78074896, 108243216, 146410000, 193877776, 252047376, 322417936, 406586896, 506250000, 623201296
OFFSET
0,1
FORMULA
G.f.: ( -1296-31936*x-55136*x^2-9920*x^3-16*x^4 ) / (x-1)^5. - R. J. Mathar, Aug 26 2015
a(n) = 16*A016840(n). - R. J. Mathar, Aug 26 2015
MATHEMATICA
(8*Range[0, 20]+6)^4 (* or *) LinearRecurrence[{5, -10, 10, -5, 1}, {1296, 38416, 234256, 810000, 2085136}, 20] (* Harvey P. Dale, Sep 21 2021 *)
PROG
(Magma) [(8*n+6)^4: n in [0..35]]; // Vincenzo Librandi, Jul 22 2011
CROSSREFS
Sequence in context: A017056 A223596 A265471 * A152071 A223437 A183618
KEYWORD
nonn,easy
AUTHOR
STATUS
approved