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A091438 formatted as a triangular array:

1
1 2
1 2 3
1 3 4 5
1 3 6 7 7
1 4 8 12 12 11
1 4 10 16 21 19 15
1 5 12 23 31 36 30 22
1 5 15 28 45 55 58 45 30
1 6 17 37 60 84 94 92 67 42
1 6 20 44 80 115 147 153 140 97 56

A091438 formatted as a square array:

1 1 1 1 1 1 1 1 1 1 1
2 2 3 3 4 4 5 5 6 6
3 4 6 8 10 12 15 17 20
5 7 12 16 23 28 37 44
7 12 21 31 45 60 80
11 19 36 55 84 115
15 30 58 94 147
22 45 92 153
30 67 140
42 97
56

A091438 formatted as an upper right triangle:

1 1 1 1 1 1 1 1 1 1 1
2 2 3 3 4 4 5 5 6 6
3 4 6 8 10 12 15 17 20
5 7 12 16 23 28 37 44
7 12 21 31 45 60 80
11 19 36 55 84 115
15 30 58 94 147
22 45 92 153
30 67 140
42 97
56

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

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