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A006906 formatted as a simple table:

n a(n)
0 1
1 1
2 3
3 6
4 14
5 25
6 56
7 97
8 198
9 354
10 672
11 1170
12 2207
13 3762
14 6786
15 11675
16 20524
17 34636
18 60258
19 100580
20 171894
21 285820
22 480497
23 791316
24 1321346
25 2156830
26 3557353
27 5783660
28 9452658
29 15250216
30 24771526
31 39713788
32 64011924
33 102199026

[1,1,3,6,14,25,56,97,198,354,672,1170,2207,3762,
 6786,11675,20524,34636,60258,100580,171894,285820,
 480497,791316,1321346,2156830,3557353,5783660,
 9452658,15250216,24771526,39713788,64011924,
 102199026]

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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