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A120421 as a simple table

n a(n)
1 1
2 2
3 3
4 6
5 10
6 20
7 36
8 72
9 135
10 272
11 528
12 1052
13 2080
14 4160
15 8244
16 16508
17 32896
18 65770
19 131328
20 262632
21 524744
22 1049600
23 2098176
24 4196200
25 8390620
26 16781312
27 33558291
28 67116944
29 134225920
30 268451240
31 536887296
32 1073774376
33 2147515424

[1,2,3,6,10,20,36,72,135,272,528,1052,2080,4160,
 8244,16508,32896,65770,131328,262632,524744,
 1049600,2098176,4196200,8390620,16781312,33558291,
 67116944,134225920,268451240,536887296,1073774376,
 2147515424]

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Last modified November 29 09:49 EST 2022. Contains 358423 sequences. (Running on oeis4.)