cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A088813 Number of subsets of {1, ..., n} that are double-free or sum-free.

Table of values

n a(n)
0 1
1 2
2 4
3 7
4 14
5 26
6 43
7 79
8 137
9 246
10 398
11 733
12 1237
13 2314
14 3586
15 6730
16 11051
17 21096
18 31985
19 61654
20 102730
21 199555
22 301062
23 589746
24 942876
25 1858881
26 2793703
27 5524251
28 9193512
29 18256867
30 27396918
31 54517922
32 88020937
33 175434632
34 263194662
35 525173052

List of values

[1, 2, 4, 7, 14, 26, 43, 79, 137, 246, 398, 733, 1237, 2314, 3586, 6730, 11051, 21096, 31985, 61654, 102730, 199555, 301062, 589746, 942876, 1858881, 2793703, 5524251, 9193512, 18256867, 27396918, 54517922, 88020937, 175434632, 263194662, 525173052]