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A275448 as a simple table

n a(n)
2 1
3 2
4 3
5 4
6 6
7 12
8 28
9 65
10 146
11 327
12 749
13 1756
14 4165
15 9913
16 23652
17 56687
18 136627
19 330969
20 804915
21 1963830
22 4805523
23 11793046
24 29019930
25 71589861
26 177006752
27 438561959
28 1088714711
29 2707615555
30 6745272783
31 16830750107
32 42058592797
33 105248042792

[1,2,3,4,6,12,28,65,146,327,749,1756,4165,9913,
 23652,56687,136627,330969,804915,1963830,4805523,
 11793046,29019930,71589861,177006752,438561959,
 1088714711,2707615555,6745272783,16830750107,
 42058592797,105248042792]

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Last modified May 20 02:22 EDT 2019. Contains 323411 sequences. (Running on oeis4.)