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”).

A304019 as a triangular array

0
11
171
216162
34538453
51201031031205
83332813702813338
139288261318131882692813
21261324214449516244492421261321
3474007104161872097920979161877104740034
5521053

A304019 as a square array

011235813213455
1716451203339282613740021053
1163810328182624217104
2451033701318444916187
31202811318516220979
5333826444920979
8928242116187
1326137104
217400
34
011235813213455
1716451203339282613740021053
1163810328182624217104
2451033701318444916187
31202811318516220979
5333826444920979
8928242116187
1326137104
217400
34