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”).

A159121 as a simple table

na(n)
61
737
8893
918156
10341049
116184359
12110865138
131992632288
1436228489065
15670284655152

[1,37,893,18156,341049,6184359,110865138,
 1992632288,36228489065,670284655152]