OFFSET
0,10
COMMENTS
a(0) = 1 accounts for the empty sum.
LINKS
Rémy Sigrist, Table of n, a(n) for n = 0..10000
Rémy Sigrist, Scatterplot of the first 2^18 terms
Rémy Sigrist, C# program
Rémy Sigrist, C++ program
EXAMPLE
The first terms, alongside the corresponding subsets of A353889, are:
n a(n) Corresponding subsets
-- ---- ---------------------
0 1 {}
1 0 none
2 0 none
3 1 {3}
4 0 none
5 0 none
6 1 {6}
7 0 none
8 0 none
9 2 {3, 6}, {9}
10 0 none
11 1 {11}
12 1 {3, 9}
PROG
(C#) See Links section.
(C++) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, May 11 2022
STATUS
approved