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A005040 formatted as a simple table:

n a(n)
1 1
2 1
3 2
4 8
5 33
6 194
7 1196
8 8196
9 58140
10 427975
11 3223610
12 24780752
13 193610550
14 1534060440
15 12302123640
16 99699690472
17 815521503060
18 6725991120004
19 55882668179880

[1,1,2,8,33,194,1196,8196,58140,427975,3223610,
 24780752,193610550,1534060440,12302123640,
 99699690472,815521503060,6725991120004,
 55882668179880]

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Last modified December 4 15:11 EST 2009. Contains 170347 sequences.


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