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A027437 as a simple table

n a(n)
0 2
1 5
2 10
3 21
4 43
5 86
6 173
7 347
8 695
9 1391
10 2783
11 5567
12 11134
13 22268
14 44536
15 89072
16 178145
17 356290
18 712581
19 1425162
20 2850325
21 5700650
22 11401300
23 22802600
24 45605201
25 91210402
26 182420805
27 364841611

[2,5,10,21,43,86,173,347,695,1391,2783,5567,11134,
 22268,44536,89072,178145,356290,712581,1425162,
 2850325,5700650,11401300,22802600,45605201,
 91210402,182420805,364841611]

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Last modified May 19 02:45 EDT 2019. Contains 323377 sequences. (Running on oeis4.)