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A128626 formatted as a simple table:

n a(n)
0 1
1 4
2 1
3 9
4 20
5 1
6 16
7 140
8 74
9 1
10 25
11 572
12 1136
13 224
14 1
15 36
16 1785
17 8866
18 6685
19 604
20 1
21 49
22 4600
23 47152
24 88380
25 31851
26 1492
27 1

[1,4,1,9,20,1,16,140,74,1,25,572,1136,224,1,36,
 1785,8866,6685,604,1,49,4600,47152,88380,31851,
 1492,1]

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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