A273070 - 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

A273070 as a simple table

n	a(n)
0	1
1	8
2	41
3	189
4	805
5	3000
6	11484
7	45736
8	181841
9	715333
10	2818337
11	11125965
12	44110241
13	175573869
14	700425137
15	2797189233

[1,8,41,189,805,3000,11484,45736,181841,715333, 2818337,11125965,44110241,175573869,700425137, 2797189233]