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A131398 formatted as a triangular array:

1
1 1
2 4 1
2 8 7 1
2 11 17 10 1
2 14 29 29 13 1
2 17 44 59 44 16 1
2 20 62 104 104 62 19 1
2 23 83 167 209 167 83 22 1
2 26 107 251 377 377 251 107 25 1

A131398 formatted as a square array:

1 1 2 2 2 2 2 2 2 2
1 4 8 11 14 17 20 23 26
1 7 17 29 44 62 83 107
1 10 29 59 104 167 251
1 13 44 104 209 377
1 16 62 167 377
1 19 83 251
1 22 107
1 25
1

A131398 formatted as an upper right triangle:

1 1 2 2 2 2 2 2 2 2
1 4 8 11 14 17 20 23 26
1 7 17 29 44 62 83 107
1 10 29 59 104 167 251
1 13 44 104 209 377
1 16 62 167 377
1 19 83 251
1 22 107
1 25
1

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.


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