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”).

A226408 as a simple table

na(n)
12
250
3240
4963
52841
67821
718765
843447
991139
10184470
11348170
12642928
131137525

[2,50,240,963,2841,7821,18765,43447,91139,184470,
 348170,642928,1137525]