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”).

A373717 as a triangular array

1
11
111
1111
11121
111331
1114541
11157861
11169131591
111711192826131
11181326455345191
11191534669110580281
11110174391141201211140411

A373717 as a square array

1111111111111
111111111111
11111111111
12345678910
1357911131517
1481319263443
161528456691
19265391141
11345105201
11980211
128140
141
1
1111111111111
111111111111
11111111111
12345678910
1357911131517
1481319263443
161528456691
19265391141
11345105201
11980211
128140
141
1