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A129867 as a simple table

n a(n)
1 1
2 2
3 5
4 14
5 47
6 200
7 1073
8 6986
9 53219
10 462332
11 4500245
12 48454958
13 571411271
14 7321388384
15 101249656697
16 1502852293010
17 23827244817323
18 401839065437636
19 7182224591785949
20 135607710526966262
21 2696935204638786575

[1,2,5,14,47,200,1073,6986,53219,462332,4500245,
 48454958,571411271,7321388384,101249656697,
 1502852293010,23827244817323,401839065437636,
 7182224591785949,135607710526966262,
 2696935204638786575]

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Last modified August 14 19:47 EDT 2020. Contains 336483 sequences. (Running on oeis4.)