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A187258 as a simple table

n a(n)
0 0
1 0
2 0
3 1
4 3
5 7
6 17
7 41
8 99
9 242
10 596
11 1477
12 3681
13 9215
14 23155
15 58368
16 147530
17 373768
18 948882
19 2413264
20 6147414
21 15682008
22 40056238
23 102434119
24 262228051
25 671945055
26 1723350315
27 4423518544
28 11362907022
29 29208834520
30 75131251334
31 193370093508
32 497969663062

[0,0,0,1,3,7,17,41,99,242,596,1477,3681,9215,
 23155,58368,147530,373768,948882,2413264,6147414,
 15682008,40056238,102434119,262228051,671945055,
 1723350315,4423518544,11362907022,29208834520,
 75131251334,193370093508,497969663062]

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Last modified August 1 02:28 EDT 2021. Contains 346377 sequences. (Running on oeis4.)