A144568 - OEIS

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A144568

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

0

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

(list; graph; refs; listen; history; text; internal format)

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