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”).

A073480 as a triangular array

1
12
533
142064
947050105
444564210100156
382831081974490175217
2558430624124325264980280288
27057623025613780837296118441764420369
23428802705760115128045936093240

A073480 as a square array

11514944443828255842705762342880
2320705643108306242302562705760
36502101974124321378081151280
410100490526437296459360
5151759801184493240
6212801764
728420
836
9
11514944443828255842705762342880
2320705643108306242302562705760
36502101974124321378081151280
410100490526437296459360
5151759801184493240
6212801764
728420
836
9