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A253211 as a simple table

n a(n)
0 8
1 15
2 71
3 519
4 4103
5 32775
6 262151
7 2097159
8 16777223
9 134217735
10 1073741831
11 8589934599
12 68719476743
13 549755813895
14 4398046511111
15 35184372088839
16 281474976710663
17 2251799813685255
18 18014398509481991
19 144115188075855879
20 1152921504606846983 

[8,15,71,519,4103,32775,262151,2097159,16777223,
 134217735,1073741831,8589934599,68719476743,
 549755813895,4398046511111,35184372088839,
 281474976710663,2251799813685255,
 18014398509481991,144115188075855879,
 1152921504606846983]

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Last modified April 19 23:15 EDT 2024. Contains 371798 sequences. (Running on oeis4.)