A352388 - OEIS

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A352388 as a simple table

n	a(n)
1	0
2	0
3	0
4	0
5	5
6	21
7	127
8	618
9	2934
10	13542
11	61803
12	276650
13	1219508
14	5309179
15	22868295
16	97663066
17	414156142
18	1746438478

[0,0,0,0,5,21,127,618,2934,13542,61803,276650, 1219508,5309179,22868295,97663066,414156142, 1746438478]