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A081406 as a simple table

n a(n)
0 1
1 1
2 1
3 4
4 5
5 6
6 28
7 40
8 54
9 280
10 440
11 648
12 3640
13 6160
14 9720
15 58240
16 104720
17 174960
18 1106560
19 2094400
20 3674160
21 24344320
22 48171200
23 88179840
24 608608000
25 1252451200
26 2380855680
27 17041024000
28 36321084800
29 71425670400
30 528271744000
31 1162274713600

[1,1,1,4,5,6,28,40,54,280,440,648,3640,6160,9720,
 58240,104720,174960,1106560,2094400,3674160,
 24344320,48171200,88179840,608608000,1252451200,
 2380855680,17041024000,36321084800,71425670400,
 528271744000,1162274713600]

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Last modified May 14 07:57 EDT 2024. Contains 372530 sequences. (Running on oeis4.)