A016980 a(n) = (6*n + 5)^12.

244140625, 3138428376721, 582622237229761, 21914624432020321, 353814783205469041, 3379220508056640625, 22563490300366186081, 116191483108948578241, 491258904256726154641, 1779197418239532716881, 5688009063105712890625, 16409682740640811134241, 43439888521963583647921

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..1000
• Index entries for linear recurrences with constant coefficients, signature (13,-78,286,-715,1287,-1716,1716,-1287,715,-286,78,-13,1).

Crossrefs

Cf. A016969 (6*n + 5), A016970, A016971, A016972, A016973, A016974, A016975, A016976, A016977, A016978, A016979.

Subsequence of A008456 (n^12).

Programs

Magma

[(6*n+5)^12: n in [0..40]]; // Vincenzo Librandi, May 19 2011

Formula

From Amiram Eldar, Apr 01 2022: (Start)

a(n) = A016969(n)^12 = A016970(n)^6 = A016971(n)^4 = A016972(n)^3 = A016974(n)^2.

Sum_{n>=0} 1/a(n) = PolyGamma(11, 5/6)/86890185149644800. (End)