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”).

A270748 as a simple table

na(n)
13
248
35215
443930979
58221176288381971
6237472642129791861355082716048930
759916111345562665920456160598356741759066440491193682529746704653

[3,48,5215,43930979,8221176288381971,
 237472642129791861355082716048930,
 59916111345562665920456160598356741759066440491193\
 682529746704653]