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”).

A355242 as a triangular array

1
11
112
1121
11213
112131
1111111
11213112
111131111
1121331212
11213112111
112131111111
1121311211111

A355242 as a square array

1111111111111
111111111111
22221212222
1111111111
331333333
11113111
1111111
212212
11111
2111
111
11
1
1111111111111
111111111111
22221212222
1111111111
331333333
11113111
1111111
212212
11111
2111
111
11
1