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A198856 as a simple table

n a(n)
0 8
1 71
2 575
3 4607
4 36863
5 294911
6 2359295
7 18874367
8 150994943
9 1207959551
10 9663676415
11 77309411327
12 618475290623
13 4947802324991
14 39582418599935
15 316659348799487
16 2533274790395903
17 20266198323167231
18 162129586585337855

[8,71,575,4607,36863,294911,2359295,18874367,
 150994943,1207959551,9663676415,77309411327,
 618475290623,4947802324991,39582418599935,
 316659348799487,2533274790395903,
 20266198323167231,162129586585337855]

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Last modified November 20 20:56 EST 2019. Contains 329347 sequences. (Running on oeis4.)