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A002450 as a simple table

n a(n)
0 0
1 1
2 5
3 21
4 85
5 341
6 1365
7 5461
8 21845
9 87381
10 349525
11 1398101
12 5592405
13 22369621
14 89478485
15 357913941
16 1431655765
17 5726623061
18 22906492245
19 91625968981
20 366503875925
21 1466015503701
22 5864062014805
23 23456248059221
24 93824992236885
25 375299968947541

[0,1,5,21,85,341,1365,5461,21845,87381,349525,
 1398101,5592405,22369621,89478485,357913941,
 1431655765,5726623061,22906492245,91625968981,
 366503875925,1466015503701,5864062014805,
 23456248059221,93824992236885,375299968947541]

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Last modified December 3 01:12 EST 2016. Contains 278694 sequences.