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A146443 formatted as a simple table:

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 17
9 41
10 75
11 189
12 781
13 2423
14 8297
15 41313
16 246219
17 1447691
18 8722011
19 58593249
20 472152107
21 3875447631 

[1,1,1,1,1,1,1,17,41,75,189,781,2423,8297,41313,
 246219,1447691,8722011,58593249,472152107,
 3875447631]

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

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