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”).

A203271 as a simple table

na(n)
11
236
3861
412783
5165993
62229009
731121459
8435195718
96036949807
1083544266699
111157418183439
1216047175896509
13222477813284564
143083880367975284
1542745762160067451
16592517433790518729
178213258632362388728

[1,36,861,12783,165993,2229009,31121459,435195718,
 6036949807,83544266699,1157418183439,
 16047175896509,222477813284564,3083880367975284,
 42745762160067451,592517433790518729,
 8213258632362388728]