A059580 Main diagonal of the array A059579.

1, 4, 52, 912, 17992, 377004, 8189036, 182127464, 4118242896, 94264009684, 2177854717348, 50687305553024, 1186694487776152, 27918432252733692, 659490547066121820, 15632281755808999768, 371637556504994957728, 8857868330404952584100, 211598146901545394669844

Offset

1,2

Links

Table of n, a(n) for n=1..19.

Crossrefs

Sequence in context: A006760 A144340 A247020 * A091463 A354253 A354262

Adjacent sequences: A059577 A059578 A059579 * A059581 A059582 A059583

Keyword

easy,nonn

Author

Floor van Lamoen, Jan 23 2001

Extensions

More terms from Sean A. Irvine, Sep 29 2022

Status

approved