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A172524 as a simple table

n a(n)
0 0
1 1
2 2
3 4
4 7
5 12
6 20
7 33
8 72
9 196
10 710
11 1546
12 2599
13 6738
14 19553
15 80688
16 185625
17 978142
18 2432840
19 12112678
20 29466988
21 39202128
22 40962878
23 41948928
24 42570288
25 42684103
26 43265540
27 44518036
28 52194742
29 65214030
30 159581828
31 337649208

[0,1,2,4,7,12,20,33,72,196,710,1546,2599,6738,
 19553,80688,185625,978142,2432840,12112678,
 29466988,39202128,40962878,41948928,42570288,
 42684103,43265540,44518036,52194742,65214030,
 159581828,337649208]

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Last modified August 10 16:56 EDT 2020. Contains 336381 sequences. (Running on oeis4.)