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”).

A215977 as a triangular array

1
01
011
0211
03311
045311
07106311
01217126311
0243323136311
048624725136311
0107127925326136311
02362671891065526136311

A215977 as a square array

100000000000
112347122448107236
113510173362127267
113612234792189
1136132553106
1136132655
11361326
113613
1136
113
11
1
100000000000
112347122448107236
113510173362127267
113612234792189
1136132553106
1136132655
11361326
113613
1136
113
11
1