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A135920 formatted as a simple table:

n a(n)
0 1
1 1
2 2
3 7
4 37
5 264
6 2433
7 27913
8 386906
9 6346119
10 121159373
11 2655174768
12 66028903633
13 1845579100993
14 57506847262162
15 1983312152411351
16 75238783332550789
17 3122408658986242072
18 141063757638078429489

[1,1,2,7,37,264,2433,27913,386906,6346119,
 121159373,2655174768,66028903633,1845579100993,
 57506847262162,1983312152411351,75238783332550789,
 3122408658986242072,141063757638078429489]

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


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