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A199887 as a simple table

n a(n)
1 0
2 0
3 2
4 1
5 9
6 14
7 24
8 43
9 108
10 227
11 440
12 817
13 1580
14 3123
15 6209
16 12462
17 25536
18 52744
19 107911
20 216702
21 427673
22 835023
23 1627607
24 3195179
25 6352470
26 12792446
27 25977145
28 52859412
29 107195861
30 215970512
31 432053205
32 859546186
33 1705026253
34 3381411667
35 6718113104

[0,0,2,1,9,14,24,43,108,227,440,817,1580,3123,
 6209,12462,25536,52744,107911,216702,427673,
 835023,1627607,3195179,6352470,12792446,25977145,
 52859412,107195861,215970512,432053205,859546186,
 1705026253,3381411667,6718113104]

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Last modified March 1 04:59 EST 2024. Contains 370430 sequences. (Running on oeis4.)