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A200666 as a simple table

n a(n)
1 7
2 28
3 112
4 448
5 1813
6 7322
7 29536
8 119066
9 479993
10 1935168
11 7802161
12 31456852
13 126827111
14 511338342
15 2061602939
16 8311924900
17 33511832745
18 135112262286
19 544742594039
20 2196280995578
21 8854916583356
22 35701054472646
23 143938712300001

[7,28,112,448,1813,7322,29536,119066,479993,
 1935168,7802161,31456852,126827111,511338342,
 2061602939,8311924900,33511832745,135112262286,
 544742594039,2196280995578,8854916583356,
 35701054472646,143938712300001]

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Last modified January 27 10:39 EST 2022. Contains 350607 sequences. (Running on oeis4.)