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A168261 as a triangular array

1
11
002
1102
00004
002004
0000006
11020006
0000000010
00004000010
000000000014
0020040000014
00000000000020

A168261 as a square array

1101000100000
101000100000
20020000020
2000200000
400004000
40000040
6000000
600000
100000
10000
1400
140
20
1101000100000
101000100000
20020000020
2000200000
400004000
40000040
6000000
600000
100000
10000
1400
140
20