OFFSET
0,2
LINKS
Michael S. Branicky, Table of n, a(n) for n = 0..106
EXAMPLE
a(0) = 1 because 1 cannot be written as the sum of two terms in A020487.
PROG
(Magma) ant:=func<n|IsZero(DivisorSigma(2, n) mod DivisorSigma(1, n))>; b:=[n: n in [1..700000] |ant(n)]; a:=[]; for n in [0..30] do k:=1; while #RestrictedPartitions(k, 2, Set(b)) ne n do k:=k+1; end while; Append(~a, k); end for; a;
CROSSREFS
KEYWORD
nonn
AUTHOR
Marius A. Burtea, Jan 25 2024
EXTENSIONS
a(16) corrected and more terms from Michael S. Branicky, Feb 24 2024
STATUS
approved