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A149470 as a simple table

n a(n)
0 1
1 1
2 4
3 13
4 55
5 205
6 922
7 3801
8 17604
9 76293
10 359387
11 1607949
12 7658582
13 35020548
14 168084270
15 780609843
16 3767705112
17 17699998379
18 85797866064
19 406619443584
20 1977668617308
21 9437495354278
22 46025575427073
23 220850255947866
24 1079461429204001
25 5203051585183678
26 25478556627949702
27 123265384982208275

[1,1,4,13,55,205,922,3801,17604,76293,359387,
 1607949,7658582,35020548,168084270,780609843,
 3767705112,17699998379,85797866064,406619443584,
 1977668617308,9437495354278,46025575427073,
 220850255947866,1079461429204001,5203051585183678,
 25478556627949702,123265384982208275]

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Last modified September 4 15:25 EDT 2024. Contains 375683 sequences. (Running on oeis4.)