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A055271 as a simple table

n a(n)
0 1
1 7
2 34
3 163
4 781
5 3742
6 17929
7 85903
8 411586
9 1972027
10 9448549
11 45270718
12 216905041
13 1039254487
14 4979367394
15 23857582483
16 114308545021
17 547685142622
18 2624117168089
19 12572900697823
20 60240386321026
21 288629030907307

[1,7,34,163,781,3742,17929,85903,411586,1972027,
 9448549,45270718,216905041,1039254487,4979367394,
 23857582483,114308545021,547685142622,
 2624117168089,12572900697823,60240386321026,
 288629030907307]

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Last modified July 21 22:02 EDT 2019. Contains 325210 sequences. (Running on oeis4.)