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A172287 Primes p such that exactly one of 2p-3 and 3p-2 is prime. 1
17, 31, 41, 47, 61, 83, 97, 101, 103, 107, 157, 163, 223, 233, 241, 257, 271, 277, 283, 293, 307, 311, 313, 317, 337, 401, 421, 457, 467, 491, 521, 523, 541, 547, 557, 563, 577, 593, 601, 613, 617, 631, 641, 643, 647, 653, 661, 673, 677, 701, 743, 761, 773 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..53.

EXAMPLE

a(1)=17 because 2*17-3=31 is prime and 3*17-2=49 is nonprime.

CROSSREFS

Sequence in context: A002675 A087166 A095748 * A062579 A134076 A160961

Adjacent sequences:  A172284 A172285 A172286 * A172288 A172289 A172290

KEYWORD

nonn,easy,less

AUTHOR

Juri-Stepan Gerasimov, Jan 30 2010

EXTENSIONS

Extended by Charles R Greathouse IV, Mar 25 2010

STATUS

approved

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Last modified May 20 12:09 EDT 2013. Contains 225459 sequences.