Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A047979
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A047979 Let (p1,p2), (p3,p4) be pairs of twin primes with p1*p2=p3+p4-1; sequence gives values of p4. +0
4
19, 73, 883, 2593, 180001, 206083, 388963, 2268451, 2836963, 3612673, 6329683, 6415363, 10342153, 18800713, 28486153, 32080051, 40878883, 89753203, 97050313, 127552393, 154844803, 183169801, 230953033 (list; graph; listen)
OFFSET

0,1
EXAMPLE

E.g. 5*7=17+19-1,11*13=71+73-1.

CROSSREFS

Cf. A047976-A047978.

Sequence in context: A141960 A157889 A118593 this_sequence A159997 A073566 A041698

Adjacent sequences: A047976 A047977 A047978 this_sequence A047980 A047981 A047982

KEYWORD

nonn

AUTHOR

Naohiro Nomoto (6284968128(AT)geocities.co.jp)

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 November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research

Legal Notice
© 2009 AT&T Intellectual Property. All Rights Reserved.