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A218045 as a simple table

n a(n)
0 0
1 0
2 1
3 2
4 9
5 46
6 262
7 1588
8 10053
9 65686
10 439658
11 2999116
12 20774154
13 145726348
14 1033125004
15 7390626280
16 53281906861
17 386732675046
18 2823690230850
19 20725376703324
20 152833785130398
21 1131770853856100
22 8412813651862868

[0,0,1,2,9,46,262,1588,10053,65686,439658,2999116,
 20774154,145726348,1033125004,7390626280,
 53281906861,386732675046,2823690230850,
 20725376703324,152833785130398,1131770853856100,
 8412813651862868]

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Last modified May 14 22:35 EDT 2024. Contains 372533 sequences. (Running on oeis4.)