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A051168 formatted as a triangular array:

1
1 1
0 1 0
0 1 1 0
0 1 1 1 0
0 1 2 2 1 0
0 1 2 3 2 1 0
0 1 3 5 5 3 1 0
0 1 3 7 8 7 3 1 0
0 1 4 9 14 14 9 4 1 0
0 1 4 12 20 25 20 12 4 1 0
0 1 5 15 30 42 42 30 15 5 1 0
0 1 5 18 40 66 75 66 40 18 5 1 0

A051168 formatted as a square array:

1 1 0 0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1 1 1
0 1 1 2 2 3 3 4 4 5 5
0 1 2 3 5 7 9 12 15 18
0 1 2 5 8 14 20 30 40
0 1 3 7 14 25 42 66
0 1 3 9 20 42 75
0 1 4 12 30 66
0 1 4 15 40
0 1 5 18
0 1 5
0 1
0

A051168 formatted as an upper right triangle:

1 1 0 0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1 1 1
0 1 1 2 2 3 3 4 4 5 5
0 1 2 3 5 7 9 12 15 18
0 1 2 5 8 14 20 30 40
0 1 3 7 14 25 42 66
0 1 3 9 20 42 75
0 1 4 12 30 66
0 1 4 15 40
0 1 5 18
0 1 5
0 1
0

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Last modified December 8 08:17 EST 2009. Contains 170430 sequences.

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