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A105868 formatted as a triangular array:

1
0 1
0 2 1
0 0 6 1
0 0 6 12 1
0 0 0 30 20 1
0 0 0 20 90 30 1
0 0 0 0 140 210 42 1
0 0 0 0 70 560 420 56 1
0 0 0 0 0 630 1680 756 72 1
0 0 0 0 0 252 3150 4200 1260 90 1
0 0 0 0 0 0 2772 11550 9240 1980 110 1

A105868 formatted as a square array:

1 0 0 0 0 0 0 0 0 0 0 0
1 2 0 0 0 0 0 0 0 0 0
1 6 6 0 0 0 0 0 0 0
1 12 30 20 0 0 0 0 0
1 20 90 140 70 0 0 0
1 30 210 560 630 252 0
1 42 420 1680 3150 2772
1 56 756 4200 11550
1 72 1260 9240
1 90 1980
1 110
1

A105868 formatted as an upper right triangle:

1 0 0 0 0 0 0 0 0 0 0 0
1 2 0 0 0 0 0 0 0 0 0
1 6 6 0 0 0 0 0 0 0
1 12 30 20 0 0 0 0 0
1 20 90 140 70 0 0 0
1 30 210 560 630 252 0
1 42 420 1680 3150 2772
1 56 756 4200 11550
1 72 1260 9240
1 90 1980
1 110
1

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Last modified December 9 18:50 EST 2009. Contains 170568 sequences.


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