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”).

A124246 as a simple table

na(n)
11
23
3123
4202884639
5242405133
692273577267
72670733723929
881035221987959

[1,3,123,202884639,242405133,92273577267,
 2670733723929,81035221987959]