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A337407 as a simple table

n a(n)
1 1
2 2
3 1
4 3
5 6
6 1
7 4
8 24
9 218
10 1
11 5
12 70
13 22815
14 22409620
15 1
16 6
17 165
18 703760
19 9651199594275
20 629648865090036960064
21 1
22 7
23 336
24 10194250
25 96076801068337216
26 76983765319971869475595432431084156
27 272443651709491352597039736725488834366101875164020736
28 1

[1,2,1,3,6,1,4,24,218,1,5,70,22815,22409620,1,6,
 165,703760,9651199594275,629648865090036960064,1,
 7,336,10194250,96076801068337216,
 76983765319971869475595432431084156,
 27244365170949135259703973672548883436610187516402\
 0736,1]

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Last modified July 28 09:21 EDT 2024. Contains 374676 sequences. (Running on oeis4.)