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A128577 as a simple table

n a(n)
0 1
1 2
2 9
3 64
4 624
5 7736
6 116416
7 2060808
8 41952600
9 965497440
10 24786054816
11 702201877920
12 21761251764672
13 732269872931712
14 26589359234860560
15 1036241806935453696
16 43142510740036313088
17 1911022260200150482944
18 89737455913330610995200
19 4452805047268938247981056
20 232806644343118618035904512
21 12791828071344703747110764544
22 736928909474399720669590216704
23 44416721474748725213260027514880

[1,2,9,64,624,7736,116416,2060808,41952600,
 965497440,24786054816,702201877920,21761251764672,
 732269872931712,26589359234860560,
 1036241806935453696,43142510740036313088,
 1911022260200150482944,89737455913330610995200,
 4452805047268938247981056,
 232806644343118618035904512,
 12791828071344703747110764544,
 736928909474399720669590216704,
 44416721474748725213260027514880]

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Last modified June 3 20:36 EDT 2024. Contains 373088 sequences. (Running on oeis4.)