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”).

A259333 as a triangular array

1
11
141
1991
11637161
125105106251
136240446245361

A259333 as a square array

1111111
149162536
1937105240
116106446
125245
136
1
1111111
149162536
1937105240
116106446
125245
136
1