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A038075 as a simple table

n a(n)
1 2
2 2
3 3
4 7
5 16
6 41
7 110
8 304
9 858
10 2474
11 7234
12 21418
13 64057
14 193277
15 587531
16 1797817
17 5532916
18 17115442
19 53186682
20 165958893
21 519764706
22 1633331926
23 5148420607
24 16273962742
25 51574291758
26 163834983761
27 521597902077
28 1663993969029
29 5318540288800
30 17029516243797

[2,2,3,7,16,41,110,304,858,2474,7234,21418,64057,
 193277,587531,1797817,5532916,17115442,53186682,
 165958893,519764706,1633331926,5148420607,
 16273962742,51574291758,163834983761,521597902077,
 1663993969029,5318540288800,17029516243797]

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Last modified January 17 20:36 EST 2020. Contains 330987 sequences. (Running on oeis4.)