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A130441 as a simple table

n a(n)
1 4
2 6
3 12
4 18
5 28
6 36
7 66
8 246
9 268
10 396
11 1476
12 1876
13 2044
14 2556
15 2706
16 3556
17 5986
18 9514
19 11034
20 16236
21 17466
22 25626
23 31956
24 34716
25 120786
26 149076
27 153756
28 246484
29 259588
30 281886
31 283276
32 483636
33 552926
34 559966
35 623566
36 670186
37 721846
38 846076
39 1050666

[4,6,12,18,28,36,66,246,268,396,1476,1876,2044,
 2556,2706,3556,5986,9514,11034,16236,17466,25626,
 31956,34716,120786,149076,153756,246484,259588,
 281886,283276,483636,552926,559966,623566,670186,
 721846,846076,1050666]

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Last modified April 16 12:16 EDT 2014. Contains 240591 sequences.