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A117880 as a simple table

n a(n)
1 4
2 9
3 21
4 46
5 93
6 187
7 377
8 755
9 1513
10 3027
11 6059
12 12127
13 24257
14 48529
15 97059
16 194127
17 388257
18 776515
19 1553033
20 3106083
21 6212177
22 12424355
23 24848723
24 49697447
25 99394909
26 198789819
27 397579639
28 795159283
29 1590318573
30 3180637153

[4,9,21,46,93,187,377,755,1513,3027,6059,12127,
 24257,48529,97059,194127,388257,776515,1553033,
 3106083,6212177,12424355,24848723,49697447,
 99394909,198789819,397579639,795159283,1590318573,
 3180637153]

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Last modified March 29 10:59 EDT 2024. Contains 371277 sequences. (Running on oeis4.)