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”).

A252157 as a triangular array

1254
19451945
259118742591
3583189818983583
55772702319727025577
830947324988498847328309
131468769957284259572876913146
2095016786178031546015460178031678620950
33818326533592429825

A252157 as a square array

125419452591358355778309131462095033818
1945187418982702473287691678632653
259118983197498895721780335924
35832702498884251546029825
55774732957215460
8309876917803
1314616786
20950
125419452591358355778309131462095033818
1945187418982702473287691678632653
259118983197498895721780335924
35832702498884251546029825
55774732957215460
8309876917803
1314616786
20950