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A275711 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 5
5 16
6 61
7 272
8 1385
9 7936
10 50521
11 353791
12 2702767
13 22368251
14 199360995
15 1903757268
16 19391512295
17 209865342434
18 2404879677510
19 29088885104489
20 370371188272931
21 4951498052966308
22 69348874393874527
23 1015423886503257017
24 15514534163575397655

[1,1,1,2,5,16,61,272,1385,7936,50521,353791,
 2702767,22368251,199360995,1903757268,19391512295,
 209865342434,2404879677510,29088885104489,
 370371188272931,4951498052966308,
 69348874393874527,1015423886503257017,
 15514534163575397655]

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Last modified December 9 21:09 EST 2018. Contains 318023 sequences. (Running on oeis4.)