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A227732 as a simple table

n a(n)
0 1
1 8
2 52
3 288
4 1396
5 6208
6 25744
7 100608
8 374500
9 1336488
10 4596000
11 15297056
12 49444368
13 155640640
14 478268800
15 1437600000
16 4234216836
17 12238666208
18 34761065924
19 97130259232
20 267280386128
21 724987680384
22 1940011007056
23 5125212451584
24 13376644454672
25 34512562565224

[1,8,52,288,1396,6208,25744,100608,374500,1336488,
 4596000,15297056,49444368,155640640,478268800,
 1437600000,4234216836,12238666208,34761065924,
 97130259232,267280386128,724987680384,
 1940011007056,5125212451584,13376644454672,
 34512562565224]

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Last modified August 4 20:50 EDT 2024. Contains 374933 sequences. (Running on oeis4.)