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.

A341507 Number of nonempty subsets S of {1,2,...,n} in which all elements are strictly less than the sum of the other elements of S.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 2
5 9
6 28
7 74
8 178
9 402
10 872
11 1842
12 3821
13 7830
14 15913
15 32161
16 64761
17 130091
18 260911
19 522749
20 1046667
21 2094797
22 4191414
23 8385079
24 16772926
25 33549239
26 67102603
27 134210207
28 268426453
29 536860171
30 1073729049
31 2147468499
32 4294949383
33 8589913467
34 17179844335

List of values

[0, 0, 0, 0, 2, 9, 28, 74, 178, 402, 872, 1842, 3821, 7830, 15913, 32161, 64761, 130091, 260911, 522749, 1046667, 2094797, 4191414, 8385079, 16772926, 33549239, 67102603, 134210207, 268426453, 536860171, 1073729049, 2147468499, 4294949383, 8589913467, 17179844335]