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”).

A286101 as a triangular array

1
22
454
716167
1112131211
164667674616
2223106251062322
299231191191319229
37382118041802113837
4615427737943643637927715446
565758595966159659585756
6723243663178186286278163143623267
7980529212991302853029912125298079

A286101 as a square array

1247111622293746566779
251612462392381545723280
41613671063121127758436529
71267251918037959631212
114610619141436596781991
1623318043661862302
229221137959686285
293827759781302
3715458631991
4657436212
56232529
6780
79
1247111622293746566779
251612462392381545723280
41613671063121127758436529
71267251918037959631212
114610619141436596781991
1623318043661862302
229221137959686285
293827759781302
3715458631991
4657436212
56232529
6780
79