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A157398 as a simple table

n a(n)
1 1
2 1
3 4
4 1
5 12
6 28
7 1
8 72
9 112
10 280
11 1
12 280
13 1400
14 1400
15 3640
16 1
17 1740
18 15120
19 21000
20 21840
21 58240
22 1
23 8484
24 126420
25 401800
26 382200
27 407680
28 1106560
29 1
30 57232
31 1538208
32 6370000
33 8357440
34 8153600
35 8852480
36 24344320
37 1

[1,1,4,1,12,28,1,72,112,280,1,280,1400,1400,3640,
 1,1740,15120,21000,21840,58240,1,8484,126420,
 401800,382200,407680,1106560,1,57232,1538208,
 6370000,8357440,8153600,8852480,24344320,1]

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Last modified April 19 15:11 EDT 2024. Contains 371794 sequences. (Running on oeis4.)