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A143841 formatted as a triangular array:

1
1 0
1 1 0
1 1 1 0
1 1 2 1 0
1 1 2 3 1 0
1 1 2 4 7 1 0

A143841 formatted as a square array:

1 1 1 1 1 1 1
0 1 1 1 1 1
0 1 2 2 2
0 1 3 4
0 1 7
0 1
0

A143841 formatted as an upper right triangle:

1 1 1 1 1 1 1
0 1 1 1 1 1
0 1 2 2 2
0 1 3 4
0 1 7
0 1
0

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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