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A282857 as a simple table

n a(n)
1 7
2 31
3 131
4 583
5 2562
6 11250
7 49471
8 217459
9 955873
10 4201865
11 18470437
12 81191949
13 356902120
14 1568863280
15 6896378669
16 30314967625
17 133257945179
18 585772685663
19 2574928188347
20 11318819287751
21 49755045854138
22 218712263620846

[7,31,131,583,2562,11250,49471,217459,955873,
 4201865,18470437,81191949,356902120,1568863280,
 6896378669,30314967625,133257945179,585772685663,
 2574928188347,11318819287751,49755045854138,
 218712263620846]

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Last modified July 15 22:48 EDT 2019. Contains 325061 sequences. (Running on oeis4.)