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A016788
a(n) = (3*n+1)^12.
2
1, 16777216, 13841287201, 1000000000000, 23298085122481, 281474976710656, 2213314919066161, 12855002631049216, 59604644775390625, 232218265089212416, 787662783788549761, 2386420683693101056, 6582952005840035281, 16777216000000000000, 39959630797262576401
OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (13,-78,286,-715,1287,-1716,1716,-1287,715,-286,78,-13,1).
FORMULA
a(n) = A008456(A016777(n)). - Michel Marcus, Jun 16 2016
Sum_{n>=0} 1/a(n) = PolyGamma(11, 1/3)/21213424108800. - Amiram Eldar, Mar 30 2022
MATHEMATICA
Table[(3n+1)^12, {n, 0, 100}] (* Mohammad K. Azarian, Jun 15 2016 *)
PROG
(Magma) [(3*n+1)^12: n in [0..20]]; // Vincenzo Librandi, Sep 29 2011
KEYWORD
nonn,easy
AUTHOR
STATUS
approved