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A205508 as a simple table

n a(n)
0 1
1 4
2 8
3 0
4 48
5 232
6 0
7 0
8 1632
9 3940
10 19024
11 0
12 0
13 267688
14 0
15 0
16 1883328
17 9093512
18 10976840
19 0
20 127955424
21 0
22 0
23 0
24 0
25 15740857452
26 25334527696
27 0
28 0
29 356483857192
30 0
31 0
32 2508054264192
33 0
34 29236023007504
35 0
36 85200014758320
37 411382062287848
38 0
39 0
40 5788584895037376

[1,4,8,0,48,232,0,0,1632,3940,19024,0,0,267688,0,
 0,1883328,9093512,10976840,0,127955424,0,0,0,0,
 15740857452,25334527696,0,0,356483857192,0,0,
 2508054264192,0,29236023007504,0,85200014758320,
 411382062287848,0,0,5788584895037376]

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Last modified April 24 12:22 EDT 2024. Contains 371937 sequences. (Running on oeis4.)