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”).

A133166 as a simple table

na(n)
10
20
30
41
50
61
70
82
91
106
113
1230
1338
14290
15806
165460
1723164
18157533
19877106

[0,0,0,1,0,1,0,2,1,6,3,30,38,290,806,5460,23164,
 157533,877106]