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A064340 as a simple table

n a(n)
0 1
1 1
2 4
3 28
4 256
5 2704
6 31168
7 380608
8 4840960
9 63458560
10 851399680
11 11635096576
12 161396604928
13 2266669453312
14 32166082822144
15 460531091685376
16 6644185553305600
17 96498260064403456
18 1409750653282287616

[1,1,4,28,256,2704,31168,380608,4840960,63458560,
 851399680,11635096576,161396604928,2266669453312,
 32166082822144,460531091685376,6644185553305600,
 96498260064403456,1409750653282287616]

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Last modified March 29 03:39 EDT 2024. Contains 371264 sequences. (Running on oeis4.)