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A030435 as a simple table

n a(n)
0 2
1 2
2 4
3 6
4 12
5 20
6 40
7 68
8 136
9 232
10 464
11 792
12 1584
13 2704
14 5408
15 9232
16 18464
17 31520
18 63040
19 107616
20 215232
21 367424
22 734848
23 1254464
24 2508928
25 4283008
26 8566016
27 14623104
28 29246208
29 49926400
30 99852800
31 170459392
32 340918784
33 581984768
34 1163969536
35 1987020288

[2,2,4,6,12,20,40,68,136,232,464,792,1584,2704,
 5408,9232,18464,31520,63040,107616,215232,367424,
 734848,1254464,2508928,4283008,8566016,14623104,
 29246208,49926400,99852800,170459392,340918784,
 581984768,1163969536,1987020288]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)