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URL: https://oeis.org/A016794

⇱ A016794 - OEIS

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A016794
a(n) = (3*n + 2)^6.
7
64, 15625, 262144, 1771561, 7529536, 24137569, 64000000, 148035889, 308915776, 594823321, 1073741824, 1838265625, 3010936384, 4750104241, 7256313856, 10779215329, 15625000000, 22164361129, 30840979456, 42180533641, 56800235584, 75418890625, 98867482624, 128100283921
OFFSET
0,1
FORMULA
From Amiram Eldar, Mar 31 2022: (Start)
a(n) = A016789(n)^6 = A016790(n)^3 = A016791(n)^2.
Sum_{n>=0} 1/a(n) = PolyGamma(5, 2/3)/87480. (End)
MAPLE
A016794:= n-> (3*n+2)^6; seq(A016794(k), k=0..30); # Wesley Ivan Hurt, Nov 05 2013
MATHEMATICA
(3Range[0, 20]+2)^6 (* Harvey P. Dale, Mar 04 2011 *)
CROSSREFS
Subsequence of A001014.
Sequence in context: A185562 A264127 A135788 * A264058 A123051 A064068
KEYWORD
nonn,easy
STATUS
approved