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A145642 as a simple table

n a(n)
1 1
2 2
3 6
4 3
5 15
6 90
7 630
8 630
9 210
10 2100
11 23100
12 34650
13 450450
14 6306300
15 28028
16 7007
17 119119
18 2144142
19 40738698
20 101846745
21 230945
22 5080790
23 116858170
24 350574510
25 70114902
26 1822987452
27 1822987452
28 6380456082
29 185033226378
30 5550996791340

[1,2,6,3,15,90,630,630,210,2100,23100,34650,
 450450,6306300,28028,7007,119119,2144142,40738698,
 101846745,230945,5080790,116858170,350574510,
 70114902,1822987452,1822987452,6380456082,
 185033226378,5550996791340]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)