OFFSET
1,2
COMMENTS
This sequence corresponds to the positions of zeros in A330578.
EXAMPLE
The first 4 composite numbers are: 4, 6, 8 and 9.
As 4 + 6 + 8 + 9 = 3*9, 4 belongs to the sequence.
PROG
(PARI) s=0; k=0; forcomposite (c=4, oo, k++; s+=c; if (s%c==0, print1 (k", ")))
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Rémy Sigrist, Dec 18 2019
EXTENSIONS
a(15)-a(24) from Giovanni Resta, Dec 20 2019
STATUS
approved