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A032264 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 7
5 23
6 136
7 872
8 6952
9 62813
10 641536
11 7277342
12 90825472
13 1236592403
14 18239374336
15 289719603812
16 4930706056192
17 89509486108793
18 1726465695809536
19 35259035421020282
20 760088211047514112
21 17247810060070731983
22 410954011551070683136
23 10257838886120978286752

[1,1,1,2,7,23,136,872,6952,62813,641536,7277342,
 90825472,1236592403,18239374336,289719603812,
 4930706056192,89509486108793,1726465695809536,
 35259035421020282,760088211047514112,
 17247810060070731983,410954011551070683136,
 10257838886120978286752]

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Last modified January 18 16:40 EST 2019. Contains 319271 sequences. (Running on oeis4.)