A049431
formatted as a simple table:
n
a(n)
0
1
1
1
2
6
3
36
4
246
5
2046
6
19716
7
209616
8
2441916
9
31050396
10
425883816
11
6244077456
[1,1,6,36,246,2046,19716,209616,2441916,31050396, 425883816,6244077456]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 1 19:22 EST 2009. Contains 167811 sequences.
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