A008974 Triangular number t(n) raised to power t(n).

1, 27, 46656, 10000000000, 437893890380859375, 5842587018385982521381124421, 33145523113253374862572728253364605812736, 106387358923716524807713475752456393740167855629859291136

Offset

1,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..25

Maple

[ seq( ( n*(n+1)/2 )^( n*(n+1)/2 ), n=1..10) ];

Mathematica

s=0; lst={}; Do[s+=n; AppendTo[lst, s^s], {n, 12}]; lst (* Vladimir Joseph Stephan Orlovsky, Jun 11 2009 *)
#^#&/@Accumulate[Range[10]] (* Harvey P. Dale, Sep 10 2014 *)

Prog

(PARI) a(n) = my(t=n*(n+1)/2); t^t; \\ Michel Marcus, Jan 16 2018

Crossrefs

Cf. A000217.

Sequence in context: A171110 A034206 A085536 * A308537 A281956 A068738

Adjacent sequences: A008971 A008972 A008973 * A008975 A008976 A008977

Keyword

nonn

Author

N. J. A. Sloane

Extensions

One more term added by Vladimir Joseph Stephan Orlovsky, Jun 11 2009

Status

approved