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A335685 Main diagonal of A335684. 1
1, 18, 6570, 48697686, 7330125946050, 22406540276117433798, 1390908038123039657933009250, 1753405140846978937849992172443469926, 44887599350675449085445484460546360180897201250, 23336231715157046447023761145710030876842913391344045399558 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..10.

CROSSREFS

Sequence in context: A319942 A013723 A232595 * A159405 A265450 A213402

Adjacent sequences: A335682 A335683 A335684 * A335686 A335687 A335688

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 03 2020, based on an email from Don Knuth.

STATUS

approved

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Last modified February 5 08:15 EST 2023. Contains 360082 sequences. (Running on oeis4.)