A283956 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A283956 as a simple table

n	a(n)
1	0
2	0
3	597042
4	68693470
5	6816984648
6	669777003928
7	62944601744067
8	5709831013093658
9	508781396370757815
10	44682472147852468812
11	3874470768927233440485
12	332663634061493461202020

[0,0,597042,68693470,6816984648,669777003928, 62944601744067,5709831013093658, 508781396370757815,44682472147852468812, 3874470768927233440485,332663634061493461202020]