A335685 Main diagonal of A335684.

1, 18, 6570, 48697686, 7330125946050, 22406540276117433798, 1390908038123039657933009250, 1753405140846978937849992172443469926, 44887599350675449085445484460546360180897201250, 23336231715157046447023761145710030876842913391344045399558

Offset

1,2

Links

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

Crossrefs

Cf. A335684.

Sequence in context: A013723 A366518 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