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A065355 as a simple table

n a(n)
0 1
1 0
2 0
3 2
4 14
5 86
6 566
7 4166
8 34406
9 316646
10 3219686
11 35878886
12 435046886
13 5704064486
14 80428314086
15 1213746099686
16 19521187251686
17 333363035571686
18 6024361885107686
19 114864714882483686
20 2304476522241459686

[1,0,0,2,14,86,566,4166,34406,316646,3219686,
 35878886,435046886,5704064486,80428314086,
 1213746099686,19521187251686,333363035571686,
 6024361885107686,114864714882483686,
 2304476522241459686]

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Last modified June 8 09:36 EDT 2024. Contains 373217 sequences. (Running on oeis4.)