OFFSET
1,1
PROG
(PARI) s=0; k=0; forcomposite (c=4, oo, k++; s+=c; if (s%c==0, print1 (c", ")))
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Rémy Sigrist, Dec 18 2019
EXTENSIONS
a(15)-a(24) from Giovanni Resta, Dec 20 2019
STATUS
approved