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A218237 as a simple table

n a(n)
1 7
2 63
3 511
4 4095
5 32753
6 262017
7 2096129
8 16769025
9 134152151
10 1073216767
11 8585730559
12 68685815807
13 549486297185
14 4395888543361
15 35167093673985
16 281336632008705
17 2250692117004583
18 18005529423519295
19 144044175288040447

[7,63,511,4095,32753,262017,2096129,16769025,
 134152151,1073216767,8585730559,68685815807,
 549486297185,4395888543361,35167093673985,
 281336632008705,2250692117004583,
 18005529423519295,144044175288040447]

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Last modified May 9 23:14 EDT 2024. Contains 372354 sequences. (Running on oeis4.)