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A019180 as a simple table

n a(n)
3 0
4 0
5 6
6 6
7 5
8 27
9 48
10 88
11 242
12 534
13 1295
14 3371
15 8005
16 20318
17 52616
18 131118
19 337153
20 878222
21 2265242
22 5912317
23 15506407
24 40583900
25 106780193
26 281722404
27 743716917
28 1970007288
29 5231872992
30 13917016645
31 37110269578

[0,0,6,6,5,27,48,88,242,534,1295,3371,8005,20318,
 52616,131118,337153,878222,2265242,5912317,
 15506407,40583900,106780193,281722404,743716917,
 1970007288,5231872992,13917016645,37110269578]

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Last modified May 17 10:16 EDT 2022. Contains 353745 sequences. (Running on oeis4.)