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A291892 as a simple table

n a(n)
8 1
9 8
10 71
11 461
12 2706
13 14235
14 70161
15 327469
16 1469596
17 6389144
18 27097948
19 112630404
20 460511702
21 1857372265
22 7406424903
23 29250500171
24 114576069911
25 445647539540
26 1722814022086
27 6624828067482
28 25356181172529
29 96650473757117
30 367059233827762
31 1389476976680608

[1,8,71,461,2706,14235,70161,327469,1469596,
 6389144,27097948,112630404,460511702,1857372265,
 7406424903,29250500171,114576069911,445647539540,
 1722814022086,6624828067482,25356181172529,
 96650473757117,367059233827762,1389476976680608]

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Last modified August 21 18:26 EDT 2019. Contains 326168 sequences. (Running on oeis4.)