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A006778 as a simple table

n a(n)
1 1
2 3
3 7
4 15
5 31
6 59
7 110
8 198
9 347
10 592
11 997
12 1641
13 2666
14 4266
15 6741
16 10525
17 16268
18 24882
19 37717
20 56683
21 84504
22 125031
23 183716
24 268125
25 388873
26 560647
27 803723
28 1146013
29 1625731

[1,3,7,15,31,59,110,198,347,592,997,1641,2666,
 4266,6741,10525,16268,24882,37717,56683,84504,
 125031,183716,268125,388873,560647,803723,1146013,
 1625731]

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Last modified August 12 09:05 EDT 2020. Contains 336438 sequences. (Running on oeis4.)