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”).

A271315 as a triangular array

1
01
112
1213
23325
354538
58778513
81311121113821
132118191918211334
21342931303129342155
3455475049495047553489

A271315 as a square array

10112358132134
11235813213455
2134711182947
325712193150
53811193049
8513183149
138212950
21133447
342155
5534
89
10112358132134
11235813213455
2134711182947
325712193150
53811193049
8513183149
138212950
21133447
342155
5534
89