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A016961
a(n) = (6*n + 4)^5.
8
1024, 100000, 1048576, 5153632, 17210368, 45435424, 102400000, 205962976, 380204032, 656356768, 1073741824, 1680700000, 2535525376, 3707398432, 5277319168, 7339040224, 10000000000, 13382255776, 17623416832, 22877577568, 29316250624, 37129300000, 46525874176
OFFSET
0,1
FORMULA
From Amiram Eldar, Mar 31 2022: (Start)
a(n) = A016957(n)^5.
a(n) = 32*A016793(n).
Sum_{n>=0} 1/a(n) = 121*zeta(5)/7776 - Pi^5/(11664*sqrt(3)). (End)
MATHEMATICA
a[n_] := (6*n + 4)^5; Array[a, 20, 0] (* Amiram Eldar, Mar 31 2022 *)
PROG
(Magma) [(6*n+4)^5: n in [0..30]]; // Vincenzo Librandi, May 06 2011
CROSSREFS
Subsequence of A000584.
Sequence in context: A066371 A236216 A264002 * A224394 A224027 A174155
KEYWORD
nonn,easy
STATUS
approved