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A308669 as a simple table

n a(n)
1 1
2 3
3 12
4 28
5 60
6 124
7 252
8 510
9 1032
10 2070
11 4146
12 8298
13 16602
14 33210
15 66426
16 132858
17 265722
18 531450
19 1062906
20 2125818
21 4251642
22 8503290
23 17006588
24 34013180
25 68026364
26 136052736
27 272105480
28 544210964
29 1088421932
30 2176843872
31 4353687750
32 8707375506
33 17414751018
34 34829502042
35 69659004090

[1,3,12,28,60,124,252,510,1032,2070,4146,8298,
 16602,33210,66426,132858,265722,531450,1062906,
 2125818,4251642,8503290,17006588,34013180,
 68026364,136052736,272105480,544210964,1088421932,
 2176843872,4353687750,8707375506,17414751018,
 34829502042,69659004090]

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Last modified December 1 14:10 EST 2021. Contains 349430 sequences. (Running on oeis4.)