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A019157 as a simple table

n a(n)
3 0
4 0
5 6
6 0
7 0
8 39
9 30
10 45
11 363
12 612
13 1041
14 4071
15 9711
16 20430
17 59787
18 159786
19 383781
20 1021164
21 2752449
22 7053003
23 18541263
24 49793187
25 131441724
26 348186552
27 934113951
28 2498081733
29 6679327998
30 17970661326
31 48405846876

[0,0,6,0,0,39,30,45,363,612,1041,4071,9711,20430,
 59787,159786,383781,1021164,2752449,7053003,
 18541263,49793187,131441724,348186552,934113951,
 2498081733,6679327998,17970661326,48405846876]

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Last modified October 5 23:01 EDT 2022. Contains 357261 sequences. (Running on oeis4.)