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A026945 as a simple table

n a(n)
0 1
1 2
2 9
3 51
4 323
5 2188
6 15511
7 113634
8 853467
9 6536382
10 50852019
11 400763223
12 3192727797
13 25669818476
14 208023278209
15 1697385471211
16 13933569346707
17 114988706524270
18 953467954114363
19 7939655757745265
20 66368199913921497

[1,2,9,51,323,2188,15511,113634,853467,6536382,
 50852019,400763223,3192727797,25669818476,
 208023278209,1697385471211,13933569346707,
 114988706524270,953467954114363,7939655757745265,
 66368199913921497]

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Last modified October 23 16:53 EDT 2018. Contains 316529 sequences. (Running on oeis4.)