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A019049 as a simple table

n a(n)
2 3
3 6
4 20
5 126
6 949
7 5882
8 34579
9 218024
10 1424091
11 9329159
12 61886557
13 417705180
14 2853920474
15 19657573349
16 136344553676

[3,6,20,126,949,5882,34579,218024,1424091,9329159,
 61886557,417705180,2853920474,19657573349,
 136344553676]

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Last modified September 15 22:11 EDT 2024. Contains 375959 sequences. (Running on oeis4.)