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A085535 (2n)^(2n-1). 1
2, 64, 7776, 2097152, 1000000000, 743008370688, 793714773254144, 1152921504606846976, 2185911559738696531968, 5242880000000000000000000, 15519448971100888972574851072, 55572324035428505185378394701824, 236773830007967588876795164938469376 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(0) is 0^(-1) = 1/0, which is undefined.

LINKS

Table of n, a(n) for n=1..13.

MATHEMATICA

Table[(2*n)^(2*n - 1), {n, 20}] (* T. D. Noe, Feb 26 2013 *)

CROSSREFS

Cf. A222621.

Sequence in context: A054956 A210930 A155957 * A060613 A139772 A092238

Adjacent sequences:  A085532 A085533 A085534 * A085536 A085537 A085538

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 05 2003

STATUS

approved

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Last modified May 19 10:59 EDT 2013. Contains 225429 sequences.