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A215288 as a simple table

n a(n)
1 1
2 6
3 30
4 280
5 2100
6 23100
7 210210
8 2522520
9 25729704
10 325909584
11 3585005424
12 47117214144
13 546896235600
14 7383099180600
15 89212448432250
16 1229149289511000
17 15323394475903800
18 214527522662653200
19 2742051789669912720

[1,6,30,280,2100,23100,210210,2522520,25729704,
 325909584,3585005424,47117214144,546896235600,
 7383099180600,89212448432250,1229149289511000,
 15323394475903800,214527522662653200,
 2742051789669912720]

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)