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”).

A197173 as a simple table

na(n)
11
25
341
4969
592206
622335117
716686610707
835396160304609
9218937410204781995
103910004408912399352584

[1,5,41,969,92206,22335117,16686610707,
 35396160304609,218937410204781995,
 3910004408912399352584]