A144568 Composites with prime sum of prime factors of n and nonprime difference largest prime factor of n - smallest prime factor of n.

6, 12, 22, 34, 48, 54, 58, 63, 82, 88, 96, 99, 108, 117, 118, 136, 142, 147, 148, 153, 165, 176, 184, 198, 202, 207, 214, 268, 273, 274, 279, 296, 298, 316, 325, 328, 333, 345, 358, 368, 369, 376, 382, 384, 385, 388, 394, 399, 414, 423, 424, 432, 435, 454, 462, 464

Offset

1,1

Links

Table of n, a(n) for n=1..56.

Example

a(1) = 6 because 2+3=5 is prime and 3-2=1 is nonprime.
a(3) = 22 because 2+11=13 is prime and 11-2=9 is nonprime.

Crossrefs

Sequence in context: A178733 A344033 A266085 * A222001 A078472 A192754

Adjacent sequences: A144565 A144566 A144567 * A144569 A144570 A144571

Keyword

nonn,easy,less

Author

Juri-Stepan Gerasimov, Jan 04 2009

Extensions

Corrected, edited, and extended by Charles R Greathouse IV, Mar 29 2010

Status

approved