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A027994 as a simple table

n a(n)
0 1
1 2
2 6
3 16
4 43
5 114
6 301
7 792
8 2080
9 5456
10 14301
11 37468
12 98137
13 256998
14 672946
15 1761984
16 4613239
17 12078110
18 31621701
19 82787980
20 216743836
21 567446112
22 1485598681
23 3889356696
24 10182482353
25 26658108074
26 69791870526
27 182717549872

[1,2,6,16,43,114,301,792,2080,5456,14301,37468,
 98137,256998,672946,1761984,4613239,12078110,
 31621701,82787980,216743836,567446112,1485598681,
 3889356696,10182482353,26658108074,69791870526,
 182717549872]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)