OFFSET
1,4
COMMENTS
A balanced number k is a number such that phi(k) | sigma(k).
FORMULA
a(n) = Sum_{k=1..floor(n/2)} c(k) * c(n-k), where c = A351114.
EXAMPLE
a(84) = 3; 84 = 78+6 = 70+14 = 42+42.
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, Feb 01 2022
STATUS
approved