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.

A093971 Number of sum-full subsets of {1,...,n}; subsets A such that there is a solution to x+y=z for x,y,z in A.

Table of values

n a(n)
1 0
2 1
3 2
4 7
5 16
6 40
7 86
8 195
9 404
10 873
11 1795
12 3727
13 7585
14 15537
15 31368
16 63582
17 127933
18 257746
19 517312
20 1038993
21 2081696
22 4173322
23 8355792
24 16731799
25 33484323
26 67014365
27 134069494
28 268234688
29 536562699
30 1073326281
31 2146849378
32 4294117419
33 8588623348
34 17178130162

List of values

[0, 1, 2, 7, 16, 40, 86, 195, 404, 873, 1795, 3727, 7585, 15537, 31368, 63582, 127933, 257746, 517312, 1038993, 2081696, 4173322, 8355792, 16731799, 33484323, 67014365, 134069494, 268234688, 536562699, 1073326281, 2146849378, 4294117419, 8588623348, 17178130162]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.