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”).

A200146 as a triangular array

1
11
103
1111
12345
111111
1030507
14077041
123456789
1111111111
183450789411
111111111111

A200146 as a square array

111111111111
10121042181
3131303131
141074141
51575151
1006101
747171
18181
9191
141
111
1
111111111111
10121042181
3131303131
141074141
51575151
1006101
747171
18181
9191
141
111
1