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A018183 as a simple table

n a(n)
0 1
1 1
2 3
3 6
4 12
5 24
6 45
7 85
8 161
9 305
10 576
11 1087
12 2053
13 3877
14 7321
15 13824
16 26102
17 49285
18 93059
19 175712
20 331776
21 626451
22 1182849
23 2233426
24 4217100
25 7962624
26 15034827
27 28388386
28 53602241
29 101210414
30 191102976

[1,1,3,6,12,24,45,85,161,305,576,1087,2053,3877,
 7321,13824,26102,49285,93059,175712,331776,626451,
 1182849,2233426,4217100,7962624,15034827,28388386,
 53602241,101210414,191102976]

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Last modified January 27 18:20 EST 2022. Contains 350611 sequences. (Running on oeis4.)