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”).

A304466 as a simple table

na(n)
11
28
341
4322
55063
689071
71802240
8101407827
98813328376
10823379005870

[1,8,41,322,5063,89071,1802240,101407827,
 8813328376,823379005870]