A108176 - 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

A108176 as a simple table

n	a(n)
1	1
2	1
3	1
4	2
5	3
6	7
7	23
8	164
9	3786
10	620973
11	2351006074
12	1459911295051236
13	3432260322166663402961472
14	5010795611887306064313121202903094714708
15	17198354961167628388233455836547370709483687001035342768448084064

[1,1,1,2,3,7,23,164,3786,620973,2351006074, 1459911295051236,3432260322166663402961472, 5010795611887306064313121202903094714708, 17198354961167628388233455836547370709483687001035\ 342768448084064]