login

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”).

A117226 as a simple table

na(n)
01
11
22
36
423
5110
6630
74204
832054
9274914
102619692
1127459344
12313990182
133889585408
1451888955808
15741668212080
1611307669002720
17183174676857608
183141820432768752
1956882461258572976
201084056190235653304
2121692744773505849952
22454758269790599361968

[1,1,2,6,23,110,630,4204,32054,274914,2619692,
 27459344,313990182,3889585408,51888955808,
 741668212080,11307669002720,183174676857608,
 3141820432768752,56882461258572976,
 1084056190235653304,21692744773505849952,
 454758269790599361968]