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A131519 formatted as a simple table:

n a(n)
1 1
2 6
3 66
4 714
5 7710
6 83226
7 898350
8 9696810
9 104667486
10 1129781946
11 12194877966
12 131631637962
13 1420833250878
14 15336488688474
15 165542216262126
16 1786864380862314
17 19287432460962078
18 208188743880291834
19 2247191437542514638
20 24256207433904571146
21 261821751919823278590

[1,6,66,714,7710,83226,898350,9696810,104667486,
 1129781946,12194877966,131631637962,1420833250878,
 15336488688474,165542216262126,1786864380862314,
 19287432460962078,208188743880291834,
 2247191437542514638,24256207433904571146,
 261821751919823278590]

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


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