OFFSET
1,1
COMMENTS
a(n) = prime(A073459(n)).
EXAMPLE
a(2) = 53 as 53 > 2*26 where 53 and 26 are respectively the 16th prime and composite numbers.
PROG
(PARI) nextcomposite(k)=if(k<3, 4, if(isprime(k), k+1, k));
(PARI) p=2; q=4; for(n=1, 19, while(p<=n*q, p=nextprime(p+1); q=nextcomposite(q+1)); print1(p, ", "));
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Apr 19 2004
EXTENSIONS
Terms a(4) to a(19) and PARI code from Klaus Brockhaus, Apr 26 2004
Terms a(20) to a(23) from Klaus Brockhaus, Nov 19 2006
More terms from David Wasserman, Apr 20 2007
STATUS
approved