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”).

A119265 as a triangular array

1
13
139
13515
1392781
13591545
1392781243729
1357152135105
135915254575225
135915274581135405
1392781243729218765611968359049
135791521354563105

A119265 as a square array

111111111111
33333333333
9595955595
1527927799277
811581151515819
4524321252724315
72935454572921
1057581218735
225135656145
4051968363
59049105
111111111111
33333333333
9595955595
1527927799277
811581151515819
4524321252724315
72935454572921
1057581218735
225135656145
4051968363
59049105