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A156951 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 4
5 1
6 1
7 52
8 52
9 1
10 1
11 2080
12 27040
13 2080
14 1
15 1
16 251680
17 130873600
18 130873600
19 251680
20 1
21 1
22 91611520
23 5764196838400
24 230567873536000
25 5764196838400
26 91611520
27 1
28 1
29 100131391360
30 2293297240551116800
31 11099558644267405312000
32 11099558644267405312000
33 2293297240551116800
34 100131391360
35 1

[1,1,1,1,4,1,1,52,52,1,1,2080,27040,2080,1,1,
 251680,130873600,130873600,251680,1,1,91611520,
 5764196838400,230567873536000,5764196838400,
 91611520,1,1,100131391360,2293297240551116800,
 11099558644267405312000,11099558644267405312000,
 2293297240551116800,100131391360,1]

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Last modified August 14 04:13 EDT 2024. Contains 375146 sequences. (Running on oeis4.)