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A033539 as a simple table

n a(n)
0 1
1 1
2 1
3 4
4 10
5 25
6 61
7 148
8 358
9 865
10 2089
11 5044
12 12178
13 29401
14 70981
15 171364
16 413710
17 998785
18 2411281
19 5821348
20 14053978
21 33929305
22 81912589
23 197754484
24 477421558
25 1152597601
26 2782616761
27 6717831124
28 16218279010
29 39154389145

[1,1,1,4,10,25,61,148,358,865,2089,5044,12178,
 29401,70981,171364,413710,998785,2411281,5821348,
 14053978,33929305,81912589,197754484,477421558,
 1152597601,2782616761,6717831124,16218279010,
 39154389145]

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Last modified April 21 13:37 EDT 2021. Contains 343153 sequences. (Running on oeis4.)