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A018794 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 1
10 3
11 8
12 20
13 48
14 112
15 256
16 576
17 1488
18 3648
19 8208
20 18239
21 40123
22 87532
23 189630
24 408376
25 932127
26 2091911
27 4632601
28 9939498
29 21220735
30 45121371
31 95597951
32 201891450

[0,0,0,0,0,0,0,0,0,1,3,8,20,48,112,256,576,1488,
 3648,8208,18239,40123,87532,189630,408376,932127,
 2091911,4632601,9939498,21220735,45121371,
 95597951,201891450]

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)