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A022198 as a simple table

n a(n)
7 1
8 3280
9 8069620
10 18326727760
11 40581331447162
12 89117945389585840
13 195168545232713290660
14 427028776969176679964080
15 934054234760012359481199283
16 2042880353039758115797506899680
17 4467854961017673003571751798888920 

[1,3280,8069620,18326727760,40581331447162,
 89117945389585840,195168545232713290660,
 427028776969176679964080,
 934054234760012359481199283,
 2042880353039758115797506899680,
 4467854961017673003571751798888920]

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Last modified April 18 04:56 EDT 2024. Contains 371767 sequences. (Running on oeis4.)