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”).

A184339 as a simple table

na(n)
11
21
31
41
53
67
745
81371
914366
10193997
113094797
1251673672
13934142475

[1,1,1,1,3,7,45,1371,14366,193997,3094797,
 51673672,934142475]