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A336747 as a simple table

n a(n)
1 0
2 0
3 1
4 1
5 0
6 0
7 3
8 10
9 0
10 0
11 76
12 140
13 0
14 0
15 2478
16 5454
17 0
18 0
19 105704
20 267312
21 0
22 0
23 7235244
24 25244832
25 0
26 0
27 709868768
28 2310292004
29 0
30 0
31 91242419796
32 339602328050
33 0
34 0
35 15469115987732
36 54988746724416
37 0
38 0
39 3075508960864496
40 11965953308933012

[0,0,1,1,0,0,3,10,0,0,76,140,0,0,2478,5454,0,0,
 105704,267312,0,0,7235244,25244832,0,0,709868768,
 2310292004,0,0,91242419796,339602328050,0,0,
 15469115987732,54988746724416,0,0,
 3075508960864496,11965953308933012]

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Last modified August 7 23:50 EDT 2022. Contains 355995 sequences. (Running on oeis4.)