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A090426 as a simple table

n a(n)
0 0
1 1
2 2
3 8
4 28
5 88
6 277
7 872
8 2742
9 8615
10 27066
11 85032
12 267137
13 839236
14 2636539
15 8282934
16 26021606
17 81749286
18 256822957
19 806833116
20 2534740992
21 7963123679
22 25016890850
23 78592880512
24 246906816042
25 775680639401
26 2436872598274
27 7655661052474
28 24050968520828

[0,1,2,8,28,88,277,872,2742,8615,27066,85032,
 267137,839236,2636539,8282934,26021606,81749286,
 256822957,806833116,2534740992,7963123679,
 25016890850,78592880512,246906816042,775680639401,
 2436872598274,7655661052474,24050968520828]

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Last modified April 20 12:25 EDT 2024. Contains 371844 sequences. (Running on oeis4.)