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”).

A233757 as a triangular array

1
36
71428
153060120
3162124248496
6312625250410082016
1272545081016203240648128
25551010202040408081601632032640
5111022204440888176163523270465408130816
102320464092

A233757 as a square array

1371531631272555111023
614306212625451010222046
2860124252508102020444092
120248504101620404088
4961008203240808176
20164064816016352
81281632032704
3264065408
130816
1371531631272555111023
614306212625451010222046
2860124252508102020444092
120248504101620404088
4961008203240808176
20164064816016352
81281632032704
3264065408
130816