

A178378


Products of 2 primes that are the difference of 2 primes.


0



4, 6, 9, 10, 15, 22, 25, 33, 34, 51, 55, 58, 82, 85, 87, 118, 121, 123, 142, 145, 177, 187, 202, 205, 213, 214, 274, 289, 295, 298, 303, 319, 321, 355, 358, 382, 394, 411, 447, 451, 454, 478, 493, 505, 535, 537, 538, 562, 573, 591, 622, 649, 681, 685, 694, 697
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OFFSET

1,1


LINKS



FORMULA



EXAMPLE

a(1)=4 because 4=2*2=(53)*(53) where 2,3,5 and 53 are all prime, a(2)=6 because 6=2*3=(53)*(52) where 2,3,5,53 and 52 are all prime.


CROSSREFS



KEYWORD

nonn


AUTHOR



EXTENSIONS



STATUS

approved



