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A127872 as a triangular array

1
11
011
1111
00011
001111
0110011
11111111
000000011
0000001111
00000110011
000011111111
0001100000011
00111100001111

A127872 as a square array

11010001000000
1110011000000
110111000001
11101000011
1101000111
111001101
11011100
1110100
110100
11100
1101
111
11
1
11010001000000
1110011000000
110111000001
11101000011
1101000111
111001101
11011100
1110100
110100
11100
1101
111
11
1