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A049132 formatted as a simple table:

n a(n)
1 1
2 1
3 0
4 0
5 2
6 2
7 3
8 19
9 42
10 82
11 280
12 768
13 1807
14 5167
15 14713
16 38361
17 105722
18 299954
19 821480
20 2272736
21 6422244
22 17979356
23 50311418
24 142328594
25 402652059
26 1137986155
27 3232284414
28 9201271726
29 26196062383
30 74759129271
31 213809119056

[1,1,0,0,2,2,3,19,42,82,280,768,1807,5167,14713,
 38361,105722,299954,821480,2272736,6422244,
 17979356,50311418,142328594,402652059,1137986155,
 3232284414,9201271726,26196062383,74759129271,
 213809119056]

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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