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A097591 formatted as a triangular array:

1
0 1
1 0 1
0 5 0 1
6 0 17 0 1
0 70 0 49 0 1
90 0 500 0 129 0 1
0 1890 0 2828 0 321 0 1
2520 0 23100 0 13930 0 769 0 1
0 83160 0 215292 0 62634 0 1793 0 1
113400 0 1549800 0 1697430 0 264072 0 4097 0 1

A097591 formatted as a square array:

1 0 1 0 6 0 90 0 2520 0 113400
1 0 5 0 70 0 1890 0 83160 0
1 0 17 0 500 0 23100 0 1549800
1 0 49 0 2828 0 215292 0
1 0 129 0 13930 0 1697430
1 0 321 0 62634 0
1 0 769 0 264072
1 0 1793 0
1 0 4097
1 0
1

A097591 formatted as an upper right triangle:

1 0 1 0 6 0 90 0 2520 0 113400
1 0 5 0 70 0 1890 0 83160 0
1 0 17 0 500 0 23100 0 1549800
1 0 49 0 2828 0 215292 0
1 0 129 0 13930 0 1697430
1 0 321 0 62634 0
1 0 769 0 264072
1 0 1793 0
1 0 4097
1 0
1

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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