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A046635 as a simple table

n a(n)
0 1
1 3
2 15
3 99
4 689
5 4817
6 33713
7 235987
8 1651903
9 11563315
10 80943201
11 566602401
12 3966216801
13 27763517603
14 194344623215
15 1360412362499
16 9522886537489
17 66660205762417
18 466621440336913
19 3266350082358387
20 22864450576508703

[1,3,15,99,689,4817,33713,235987,1651903,11563315,
 80943201,566602401,3966216801,27763517603,
 194344623215,1360412362499,9522886537489,
 66660205762417,466621440336913,3266350082358387,
 22864450576508703]

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Last modified August 3 05:55 EDT 2020. Contains 336197 sequences. (Running on oeis4.)