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A061897 as a triangular array

1
02
002
0042
00862
00161882
00325428102
00641629640122
0012848632815054142
002561458112055022070162
0051243743824200085830888182
0010241312213056

A061897 as a square array

100000000000
20000000000
2481632641282565121024
2618541624861458437413122
2828963281120382413056
210401505502000
21254220858
21470308
21688
218
2
100000000000
20000000000
2481632641282565121024
2618541624861458437413122
2828963281120382413056
210401505502000
21254220858
21470308
21688
218
2