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A374766 as a triangular array

1
01
002
0013
00035
000187
000131711
00004103515
0000112286522
000016317011830
000013227816320342
000004136918635434256

A374766 as a square array

100000000000
10000000000
2100000000
331100000
58341110
7171012634
113528312213
1565707869
22118163186
30203354
42342
56
100000000000
10000000000
2100000000
331100000
58341110
7171012634
113528312213
1565707869
22118163186
30203354
42342
56