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A038252 as a triangular array

1
510
25100100
12575015001000
6255000150002000010000
312531250125000250000250000100000
156251875009375002500000375000030000001000000
78125109375065625002187500043750000

A038252 as a square array

152512562531251562578125
101007505000312501875001093750
1001500150001250009375006562500
100020000250000250000021875000
10000250000375000043750000
1000003000000
1000000
152512562531251562578125
101007505000312501875001093750
1001500150001250009375006562500
100020000250000250000021875000
10000250000375000043750000
1000003000000
1000000