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”).

A297552 as a triangular array

1
24
398
5141312
616242876
7172944136140
10183248141200204
111933491562054601228
1520345019622071621882252
21253551201396780224832123276

A297552 as a square array

12356710111521
4914161718192025
813242932333435
12284448495051
76136141156196201
140200205220396
204460716780
122821882248
22523212
3276
12356710111521
4914161718192025
813242932333435
12284448495051
76136141156196201
140200205220396
204460716780
122821882248
22523212
3276