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A061232 formatted as a simple table:

n a(n)
0 0
1 1
2 2
3 6
4 21
5 98
6 547
7 3556
8 26738
9 227720
10 2170267
11 22877331
12 264314464
13 3320870054
14 45076422125
15 657316885209
16 10247614197601

[0,1,2,6,21,98,547,3556,26738,227720,2170267,
 22877331,264314464,3320870054,45076422125,
 657316885209,10247614197601]

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.


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