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A147215 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 71
11 215
12 773
13 2523
14 9517
15 44347
16 255961
17 1482711
18 8989887
19 64060215
20 492775957
21 4232478379

[1,1,1,1,1,1,1,17,41,71,215,773,2523,9517,44347,
 255961,1482711,8989887,64060215,492775957,
 4232478379]

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


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