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A195583 as a simple table

n a(n)
0 1
1 1
2 1
3 3
4 3
5 5
6 15
7 315
8 630
9 567
10 1134
11 4725
12 9450
13 26325
14 28665
15 116093250
16 116093250
17 7894341000
18 8881133625
19 14849255421000
20 4242644406000
21 3118343638410000
22 3811308891390000
23 34301780022510000
24 205810680135060000
25 1470076286679000000
26 2702564486622000000

[1,1,1,3,3,5,15,315,630,567,1134,4725,9450,26325,
 28665,116093250,116093250,7894341000,8881133625,
 14849255421000,4242644406000,3118343638410000,
 3811308891390000,34301780022510000,
 205810680135060000,1470076286679000000,
 2702564486622000000]

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Last modified June 20 18:00 EDT 2024. Contains 373532 sequences. (Running on oeis4.)