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”).

A193597 as a triangular array

1
11
122
1465
16172116
1934788661
11269201397401269
1161165221282225021131350
12019410744099890014187125097650
1252922172100783404467316991028271348634
1

A193597 as a square array

11111111111
1246912162025
26173469116194292
5217820152210742172
16863971282409910078
614012250890034044
26921131418767316
13501250999102
765082713
48634
11111111111
1246912162025
26173469116194292
5217820152210742172
16863971282409910078
614012250890034044
26921131418767316
13501250999102
765082713
48634