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A149093 as a simple table

n a(n)
0 1
1 1
2 4
3 8
4 32
5 84
6 346
7 1035
8 4398
9 14222
10 61684
11 210612
12 926902
13 3292765
14 14655294
15 53664171
16 240961436
17 903803156
18 4087224128
19 15633002424
20 71112783970
21 276447837298
22 1263743381144
23 4980630942098
24 22864035964645
25 91177566889046
26 420076191695644
27 1692376534197673
28 7821793195702664

[1,1,4,8,32,84,346,1035,4398,14222,61684,210612,
 926902,3292765,14655294,53664171,240961436,
 903803156,4087224128,15633002424,71112783970,
 276447837298,1263743381144,4980630942098,
 22864035964645,91177566889046,420076191695644,
 1692376534197673,7821793195702664]

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Last modified August 7 23:38 EDT 2020. Contains 336279 sequences. (Running on oeis4.)