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A068596 as a simple table

n a(n)
1 1
2 0
3 1
4 1
5 11
6 44
7 169
8 588
9 1948
10 6560
11 23133
12 84565
13 317755
14 1198336
15 4509419
16 16909184
17 63409935
18 238609052
19 902444517
20 3429249843
21 13076666409
22 49977802752
23 191312873561
24 733365845820
25 2815437297416
26 10825960652800
27 41694907460224
28 160823207301705

[1,0,1,1,11,44,169,588,1948,6560,23133,84565,
 317755,1198336,4509419,16909184,63409935,
 238609052,902444517,3429249843,13076666409,
 49977802752,191312873561,733365845820,
 2815437297416,10825960652800,41694907460224,
 160823207301705]

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Last modified April 24 07:54 EDT 2024. Contains 371922 sequences. (Running on oeis4.)