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A045694 as a simple table

n a(n)
1 1
2 2
3 6
4 16
5 48
6 138
7 414
8 1226
9 3678
10 10986
11 32958
12 98736
13 296208
14 888210
15 2664630
16 7992664
17 23977992
18 71930298
19 215790894
20 647361696
21 1942085088
22 5826222306
23 17478666918
24 52435902018
25 157307706054
26 471922821954
27 1415768465862

[1,2,6,16,48,138,414,1226,3678,10986,32958,98736,
 296208,888210,2664630,7992664,23977992,71930298,
 215790894,647361696,1942085088,5826222306,
 17478666918,52435902018,157307706054,471922821954,
 1415768465862]

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Last modified February 22 18:05 EST 2019. Contains 320400 sequences. (Running on oeis4.)