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A018186 as a simple table

n a(n)
0 1
1 3
2 6
3 9
4 19
5 30
6 63
7 99
8 208
9 327
10 687
11 1080
12 2269
13 3567
14 7494
15 11781
16 24751
17 38910
18 81747
19 128511
20 269992
21 424443
22 891723
23 1401840
24 2945161
25 4629963
26 9727206
27 15291729
28 32126779
29 50505150
30 106107543
31 166807179
32 350449408
33 550926687
34 1157455767
35 1819587240

[1,3,6,9,19,30,63,99,208,327,687,1080,2269,3567,
 7494,11781,24751,38910,81747,128511,269992,424443,
 891723,1401840,2945161,4629963,9727206,15291729,
 32126779,50505150,106107543,166807179,350449408,
 550926687,1157455767,1819587240]

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Last modified April 25 13:12 EDT 2024. Contains 371969 sequences. (Running on oeis4.)