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A169772 as a simple table

n a(n)
4 2
5 0
6 0
7 0
8 92
9 0
10 1064
11 0
12 14928
13 0
14 156416
15 0
16 1785600
17 0
18 19416704
19 0
20 211014544
21 0
22 2261999424
23 0
24 24067157192
25 0
26 254242274472
27 0
28 2669251156032
29 0
30 27880294589248

[2,0,0,0,92,0,1064,0,14928,0,156416,0,1785600,0,
 19416704,0,211014544,0,2261999424,0,24067157192,0,
 254242274472,0,2669251156032,0,27880294589248]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)