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A032164 as a simple table

n a(n)
0 1
1 6
2 15
3 70
4 315
5 1554
6 7735
7 39990
8 209790
9 1119720
10 6045837
11 32981550
12 181394535
13 1004668770
14 5597420295
15 31345665106
16 176319264240
17 995685849690
18 5642219252460
19 32071565263710
20 182807918979777

[1,6,15,70,315,1554,7735,39990,209790,1119720,
 6045837,32981550,181394535,1004668770,5597420295,
 31345665106,176319264240,995685849690,
 5642219252460,32071565263710,182807918979777]

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Last modified July 10 20:32 EDT 2024. Contains 374214 sequences. (Running on oeis4.)