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A006351 as a simple table

n a(n)
1 1
2 2
3 8
4 52
5 472
6 5504
7 78416
8 1320064
9 25637824
10 564275648
11 13879795712
12 377332365568
13 11234698041088
14 363581406419456
15 12707452084972544
16 477027941930515456
17 19142041172838025216
18 817675811320888020992
19 37044610820729973813248
20 1774189422608238694776832

[1,2,8,52,472,5504,78416,1320064,25637824,
 564275648,13879795712,377332365568,11234698041088,
 363581406419456,12707452084972544,
 477027941930515456,19142041172838025216,
 817675811320888020992,37044610820729973813248,
 1774189422608238694776832]

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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)