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A164309 as a triangular array

1
52
25104
101255020
502082050
62525010025010040
100250100401640100
40100250

A164309 as a square array

1525105062510040
21012520250250100
4508100100250
202025040
5010016
4040
100
1525105062510040
21012520250250100
4508100100250
202025040
5010016
4040
100