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A221873 as a triangular array

0
11
0200
11621621
01442284714420
112688109441109441126881
011072029026291438822429026291107200
19708288932589715724141241572414124893258979708281
084890902568285560

A221873 as a square array

010101010
1201621442126881107209708288489090
016228471094412902629893258972568285560
11442109441143882241572414124
01268829026291572414124
111072089325897
0970828
1

A221873 as an upper right triangle

010101010
1201621442126881107209708288489090
016228471094412902629893258972568285560
11442109441143882241572414124
01268829026291572414124
111072089325897
0970828
1

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Last modified June 14 11:26 EDT 2024. Contains 373397 sequences. (Running on oeis4.)