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A189355 as a simple table

n a(n)
1 0
2 1
3 1
4 0
5 4
6 0
7 1
8 13
9 13
10 1
11 0
12 45
13 48
14 45
15 0
16 1
17 160
18 557
19 557
20 160
21 1
22 0
23 565
24 3632
25 12592
26 3632
27 565
28 0
29 1
30 2005
31 30769
32 237297
33 237297
34 30769
35 2005
36 1
37 0
38 7108
39 229248
40 4791913
41 10252800
42 4791913
43 229248
44 7108
45 0
46 1
47 25209
48 1815601
49 94635005

[0,1,1,0,4,0,1,13,13,1,0,45,48,45,0,1,160,557,557,
 160,1,0,565,3632,12592,3632,565,0,1,2005,30769,
 237297,237297,30769,2005,1,0,7108,229248,4791913,
 10252800,4791913,229248,7108,0,1,25209,1815601,
 94635005]

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Last modified May 11 19:29 EDT 2021. Contains 343808 sequences. (Running on oeis4.)