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A006104 as a simple table

n a(n)
0 1
1 1
2 4
3 13
4 130
5 1210
6 33880
7 925771
8 75913222
9 6174066262
10 1506472167928
11 366573514642546
12 267598665689058580
13 195168545232713290660
14 427028776969176679964080
15 934054234760012359481199283
16 6129263888495201102915629695046

[1,1,4,13,130,1210,33880,925771,75913222,
 6174066262,1506472167928,366573514642546,
 267598665689058580,195168545232713290660,
 427028776969176679964080,
 934054234760012359481199283,
 6129263888495201102915629695046]

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Last modified April 23 02:53 EDT 2024. Contains 371906 sequences. (Running on oeis4.)