A088993 Primes such that exactly five of them occur between consecutive prime-indexed primes.

89, 97, 101, 103, 107, 131, 137, 139, 149, 151, 223, 227, 229, 233, 239, 251, 257, 263, 269, 271, 293, 307, 311, 313, 317, 373, 379, 383, 389, 397, 433, 439, 443, 449, 457, 743, 751, 757, 761, 769, 881, 883, 887, 907, 911, 929, 937, 941, 947, 953, 997, 1009

Offset

1,1

Links

Table of n, a(n) for n=1..52.

Prog

(PARI) pipprimes(n, m) = { for(x=1, n, c=0; p1 = prime(prime(x)); p2 = prime(prime(x+1)); forprime(y=p1+2, p2-2, c++); if(c==m, forprime(y=p1+2, p2-2, print1(y", "); ); ) ) }

Crossrefs

Sequence in context: A096400 A074119 A253648 * A107202 A260807 A178917

Adjacent sequences: A088990 A088991 A088992 * A088994 A088995 A088996

Keyword

nonn

Author

Cino Hilliard, Nov 01 2003

Status

approved