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A085536
a(n) = (3n)^(3n).
0
1, 27, 46656, 387420489, 8916100448256, 437893890380859375, 39346408075296537575424, 5842587018385982521381124421, 1333735776850284124449081472843776, 443426488243037769948249630619149892803, 205891132094649000000000000000000000000000000, 129110040087761027839616029934664535539337183380513
OFFSET
0,2
COMMENTS
All terms are both perfect cubes and numbers of the form n^n. - William Boyles, Jul 31 2015
So this is the intersection of A000578 and A000312. - Michel Marcus, Aug 01 2015
FORMULA
a(n) = A000312(3*n). - Michel Marcus, Jul 31 2015
MATHEMATICA
Join[{1}, Table[(3 n)^(3 n), {n, 15}]] (* Vincenzo Librandi, Aug 01 2015 *)
PROG
(Magma) [(3*n)^(3*n): n in [0..12]]; // Vincenzo Librandi, Aug 01 2015
CROSSREFS
Sequence in context: A278140 A171110 A034206 * A008974 A308537 A281956
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jul 05 2003
STATUS
approved