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A221508 as a simple table

n a(n)
1 0
2 9
3 44
4 446
5 3334
6 27540
7 219070
8 1766136
9 14168766
10 113870162
11 914550470
12 7346946970
13 59015933032
14 474072774244
15 3808166264624
16 30590638905810
17 245731343642532
18 1973934759524284
19 15856413036814582
20 127372929035331130

[0,9,44,446,3334,27540,219070,1766136,14168766,
 113870162,914550470,7346946970,59015933032,
 474072774244,3808166264624,30590638905810,
 245731343642532,1973934759524284,
 15856413036814582,127372929035331130]

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Last modified April 15 17:47 EDT 2024. Contains 371693 sequences. (Running on oeis4.)