OFFSET
1,2
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
EXAMPLE
112 is in the sequence since 112 + prime(112) + prime(prime(112)) = 5242 = 2*2621.
MAPLE
with(numtheory): A116039:=n->`if`(bigomega(n+ithprime(n)+ithprime(ithprime(n))) = 2, n, NULL): seq(A116039(n), n=1..500); # Wesley Ivan Hurt, Jun 23 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
Giovanni Resta, Feb 13 2006
STATUS
approved