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”).

A205081 as a simple table

na(n)
11
23
36
470
51694
619492
71373508
8114092895
911345187570
104332229490711

[1,3,6,70,1694,19492,1373508,114092895,
 11345187570,4332229490711]