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A047918 formatted as a triangular array:

1
2 0
6 0 0
8 0 0 16
20 0 0 0 100
12 24 36 0 0 648
42 0 0 0 0 0 4998
32 32 0 320 0 0 0 39936
54 0 270 0 0 0 0 0 362556
40 160 0 0 3800 0 0 0 0 3624800
110 0 0 0 0 0 0 0 0 0 39916690

A047918 formatted as a square array:

1 2 6 8 20 12 42 32 54 40 110
0 0 0 0 24 0 32 0 160 0
0 0 0 36 0 0 270 0 0
16 0 0 0 320 0 0 0
100 0 0 0 0 3800 0
648 0 0 0 0 0
4998 0 0 0 0
39936 0 0 0
362556 0 0
3624800 0
39916690

A047918 formatted as an upper right triangle:

1 2 6 8 20 12 42 32 54 40 110
0 0 0 0 24 0 32 0 160 0
0 0 0 36 0 0 270 0 0
16 0 0 0 320 0 0 0
100 0 0 0 0 3800 0
648 0 0 0 0 0
4998 0 0 0 0
39936 0 0 0
362556 0 0
3624800 0
39916690

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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.


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