OFFSET
1,2
LINKS
Donovan Johnson, Table of n, a(n) for n = 1..1000
PROG
(PARI) isok(n) = sigma(n+2)-sigma(n) == prime(n+2)-prime(n); \\ Michel Marcus, Nov 20 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Feb 17 2002
EXTENSIONS
a(14) from Michel Marcus, Nov 20 2013
a(15)-a(36) from Donovan Johnson, Nov 20 2013
STATUS
approved