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A000147 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 1
7 2
8 7
9 14
10 32
11 58
12 110
13 187
14 322
15 519
16 839
17 1302
18 2015
19 3032
20 4542
21 6668
22 9738
23 14006
24 20036
25 28324
26 39830
27 55473
28 76875
29 105692
30 144629
31 196585
32 266038
33 357952
34 479664
35 639519
36 849425
37 1123191
38 1479972
39 1942284
40 2540674
41 3311415

[0,0,0,0,0,1,2,7,14,32,58,110,187,322,519,839,
 1302,2015,3032,4542,6668,9738,14006,20036,28324,
 39830,55473,76875,105692,144629,196585,266038,
 357952,479664,639519,849425,1123191,1479972,
 1942284,2540674,3311415]

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Last modified January 21 16:54 EST 2020. Contains 331114 sequences. (Running on oeis4.)