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A004148 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 4
5 8
6 17
7 37
8 82
9 185
10 423
11 978
12 2283
13 5373
14 12735
15 30372
16 72832
17 175502
18 424748
19 1032004
20 2516347
21 6155441
22 15101701
23 37150472
24 91618049
25 226460893
26 560954047
27 1392251012
28 3461824644
29 8622571758
30 21511212261
31 53745962199
32 134474581374

[1,1,1,2,4,8,17,37,82,185,423,978,2283,5373,12735,
 30372,72832,175502,424748,1032004,2516347,6155441,
 15101701,37150472,91618049,226460893,560954047,
 1392251012,3461824644,8622571758,21511212261,
 53745962199,134474581374]

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Last modified October 17 22:56 EDT 2017. Contains 293484 sequences.