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A100683 as a simple table

n a(n)
0 -1
1 2
2 2
3 3
4 7
5 12
6 22
7 41
8 75
9 138
10 254
11 467
12 859
13 1580
14 2906
15 5345
16 9831
17 18082
18 33258
19 61171
20 112511
21 206940
22 380622
23 700073
24 1287635
25 2368330
26 4356038
27 8012003
28 14736371
29 27104412
30 49852786
31 91693569
32 168650767
33 310197122

[-1,2,2,3,7,12,22,41,75,138,254,467,859,1580,2906,
 5345,9831,18082,33258,61171,112511,206940,380622,
 700073,1287635,2368330,4356038,8012003,14736371,
 27104412,49852786,91693569,168650767,310197122]

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)