Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A088708
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A088708 Numbers n which are a product of two primes j and k such that n+j-k and n-j+k are both primes. +0
1
6, 10, 15, 22, 57, 85, 87, 142, 187, 217, 235, 267, 274, 295, 339, 382, 505, 565, 579, 589, 667, 694, 799, 835, 849, 862, 889, 922, 1059, 1111, 1159, 1317, 1339, 1555, 1569, 1797, 1969, 1977, 2122, 2182, 2217, 2227, 2229, 2245, 2319, 2335, 2359, 2497, 2577 (list; graph; listen)
OFFSET

1,1

EXAMPLE

a(10)=217 because 217 has only one pair of prime factors (7 and 31), and both 217+7-31 and 217-7+31 (193 and 241) are primes.

CROSSREFS

Cf. A001358.

Sequence in context: A022949 A049694 A093773 this_sequence A020159 A048017 A048078

Adjacent sequences: A088705 A088706 A088707 this_sequence A088709 A088710 A088711

KEYWORD

nonn

AUTHOR

Chuck Seggelin (barkeep(AT)plastereddragon.com), Oct 11 2003

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified September 8 08:06 EDT 2008. Contains 143486 sequences.


AT&T Labs Research