A061848
formatted as a simple table:
n
a(n)
3
0
4
2
5
0
6
0
7
12
8
38
9
0
10
0
11
1172
12
0
13
14572
14
52536
15
0
16
0
17
2581112
18
0
19
35791472
20
0
21
0
22
1908889156
23
0
24
0
25
399822600756
[0,2,0,0,12,38,0,0,1172,0,14572,52536,0,0,2581112, 0,35791472,0,0,1908889156,0,0,399822600756]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 16 17:18 EST 2009. Contains 170825 sequences.
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