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A080049 formatted as a simple table:

n a(n)
2 0
3 2
4 11
5 63
6 388
7 2734
8 21893
9 197069
10 1970726
11 21678036
12 260136487
13 3381774403
14 47344841720
15 710172625898
16 11362762014473
17 193166954246169
18 3477005176431178
19 66063098352192544
20 1321261967043851051

[0,2,11,63,388,2734,21893,197069,1970726,21678036,
 260136487,3381774403,47344841720,710172625898,
 11362762014473,193166954246169,3477005176431178,
 66063098352192544,1321261967043851051]

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.


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