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A019108 as a simple table

n a(n)
3 0
4 0
5 6
6 0
7 3
8 39
9 27
10 87
11 402
12 546
13 1332
14 4503
15 9141
16 22260
17 62355
18 147339
19 366447
20 965064
21 2437173
22 6269181
23 16472895
24 42971868
25 112948683
26 299077797
27 792147474
28 2106620565
29 5620012437
30 15013246413
31 40201647126

[0,0,6,0,3,39,27,87,402,546,1332,4503,9141,22260,
 62355,147339,366447,965064,2437173,6269181,
 16472895,42971868,112948683,299077797,792147474,
 2106620565,5620012437,15013246413,40201647126]

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Last modified August 22 10:30 EDT 2024. Contains 375369 sequences. (Running on oeis4.)