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A001856 as a simple table

n a(n)
1 1
2 2
3 4
4 8
5 16
6 21
7 42
8 51
9 102
10 112
11 224
12 235
13 470
14 486
15 972
16 990
17 1980
18 2002
19 4004
20 4027
21 8054
22 8078
23 16156
24 16181
25 32362
26 32389
27 64778
28 64806
29 129612
30 129641
31 259282
32 259313
33 518626
34 518658
35 1037316
36 1037349
37 2074698
38 2074734
39 4149468

[1,2,4,8,16,21,42,51,102,112,224,235,470,486,972,
 990,1980,2002,4004,4027,8054,8078,16156,16181,
 32362,32389,64778,64806,129612,129641,259282,
 259313,518626,518658,1037316,1037349,2074698,
 2074734,4149468]

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Last modified March 18 12:10 EDT 2019. Contains 321283 sequences. (Running on oeis4.)