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A032255 as a simple table

n a(n)
1 1
2 3
3 8
4 15
5 34
6 70
7 162
8 388
9 1020
10 2729
11 7580
12 21112
13 59398
14 166990
15 471635
16 1332492
17 3776712
18 10721570
19 30518960
20 87046334
21 248852142
22 712831894
23 2045974474
24 5882821341
25 16943916873
26 48878646537
27 141209193981

[1,3,8,15,34,70,162,388,1020,2729,7580,21112,
 59398,166990,471635,1332492,3776712,10721570,
 30518960,87046334,248852142,712831894,2045974474,
 5882821341,16943916873,48878646537,141209193981]

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Last modified May 22 18:04 EDT 2013. Contains 225560 sequences.