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A205507 as a simple table

n a(n)
0 1
1 4
2 4
3 0
4 12
5 40
6 0
7 0
8 84
9 136
10 440
11 0
12 0
13 1864
14 0
15 0
16 3948
17 12776
18 10336
19 0
20 54120
21 0
22 0
23 0
24 0
25 900300
26 971144
27 0
28 0
29 4113832
30 0
31 0
32 8713236
33 0
34 45623096
35 0
36 59721408
37 193262536
38 0
39 0
40 818673240
41 1324641128
42 0
43 0
44 0
45 9079225360
46 0
47 0
48 0
49 31114968196

[1,4,4,0,12,40,0,0,84,136,440,0,0,1864,0,0,3948,
 12776,10336,0,54120,0,0,0,0,900300,971144,0,0,
 4113832,0,0,8713236,0,45623096,0,59721408,
 193262536,0,0,818673240,1324641128,0,0,0,
 9079225360,0,0,0,31114968196]

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Last modified September 29 05:48 EDT 2020. Contains 337425 sequences. (Running on oeis4.)