OFFSET
1,3
PROG
(PARI) a(n) = prime(prime(2*n)-2*n)-2*n; \\ Michel Marcus, Jan 24 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
Juri-Stepan Gerasimov, Jul 31 2008
EXTENSIONS
Corrected by D. S. McNeil, Mar 21 2009
STATUS
approved