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”).

A143965 as a triangular array

1
11
212
6225
2464515
1202412101554
72012048303054235
5040720240120901082351237
403205040144060036032447012377790

A143965 as a square array

112624120720504040320
1126241207205040
22412482401440
551030120600
15153090360
5454108324
235235470
12371237
7790
112624120720504040320
1126241207205040
22412482401440
551030120600
15153090360
5454108324
235235470
12371237
7790