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A257888 as a simple table

n a(n)
3 4
4 36
5 224
6 1200
7 5940
8 28028
9 128128
10 572832
11 2519400
12 10943240
13 47070144
14 200880160
15 851809140
16 3592795500
17 15085939200
18 63102895680
19 263083395960
20 1093683448440
21 4535210472000
22 18764563053600
23 77485731403080
24 319402222692696
25 1314511549519104

[4,36,224,1200,5940,28028,128128,572832,2519400,
 10943240,47070144,200880160,851809140,3592795500,
 15085939200,63102895680,263083395960,
 1093683448440,4535210472000,18764563053600,
 77485731403080,319402222692696,1314511549519104]

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Last modified July 25 11:06 EDT 2024. Contains 374588 sequences. (Running on oeis4.)