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A004310 as a simple table

n a(n)
4 1
5 10
6 66
7 364
8 1820
9 8568
10 38760
11 170544
12 735471
13 3124550
14 13123110
15 54627300
16 225792840
17 927983760
18 3796297200
19 15471286560
20 62852101650
21 254661927156
22 1029530696964
23 4154246671960
24 16735679449896
25 67327446062800
26 270533919634160
27 1085929983159840
28 4355031703297275

[1,10,66,364,1820,8568,38760,170544,735471,
 3124550,13123110,54627300,225792840,927983760,
 3796297200,15471286560,62852101650,254661927156,
 1029530696964,4154246671960,16735679449896,
 67327446062800,270533919634160,1085929983159840,
 4355031703297275]

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Last modified May 23 00:00 EDT 2024. Contains 372758 sequences. (Running on oeis4.)