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”).

A178619 as a triangular array

1
13
1123
131311
165155351
120546336211203
15541918413713223823
8092382332211486845127876
2360749501651705172058288511203544803
445555199032802220198440484291258

A178619 as a square array

1111112015548092236074455
312316554619183823495055
3311553364133221651
13521711990
111170532802
20332248617205220198
3823845182885440484
27876112035291258
44803
1111112015548092236074455
312316554619183823495055
3311553364133221651
13521711990
111170532802
20332248617205220198
3823845182885440484
27876112035291258
44803