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A102540 Primes that are not Chen primes (see A109611). 9
43, 61, 73, 79, 97, 103, 151, 163, 173, 193, 223, 229, 241, 271, 277, 283, 313, 331, 349, 367, 373, 383, 397, 421, 433, 439, 457, 463, 523, 547, 593, 601, 607, 613, 619, 643, 661, 673, 691, 709, 727, 733, 739, 757, 773, 823, 853, 859, 883, 907, 929, 967, 997 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Donovan Johnson, Table of n, a(n) for n = 1..1000

Eric Weisstein's World of Mathematics, Chen Prime

PROG

(PARI) n=0; for(j=1, 1994, if(bigomega(prime(j)+2)>2, n++; write("b102540.txt", n " " prime(j)))) /* Donovan Johnson, Apr 29 2013 */

CROSSREFS

Sequence in context: A215538 A235149 A064508 * A063641 A129928 A245742

Adjacent sequences:  A102537 A102538 A102539 * A102541 A102542 A102543

KEYWORD

nonn

AUTHOR

Wilfredo Lopez (chakotay147138274(AT)yahoo.com), Aug 14 2005

EXTENSIONS

More terms from Robert Happelberg (roberthappelberg(AT)yahoo.com), Aug 16 2005

STATUS

approved

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Last modified November 29 03:09 EST 2014. Contains 250479 sequences.