The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A158910 First Differences of A061240. 3
 18, 18, 18, 54, 18, 18, 18, 72, 18, 36, 18, 36, 36, 18, 18, 72, 18, 54, 36, 18, 36, 90, 18, 36, 90, 54, 36, 36, 18, 18, 54, 90, 36, 54, 18, 18, 54, 36, 18, 54, 18, 54, 18, 36, 90, 36, 54, 36, 54, 36, 18, 18, 54, 36, 72, 18, 108, 36, 36, 72, 18, 18, 126, 36, 54, 54, 54, 36, 126 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Since A061240 contains prime numbers of the form 9k+5, k even, all numbers here are multiples of 18. LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 MATHEMATICA Differences[Select[Prime[Range[500]], Mod[#, 9]==5&]] (* Harvey P. Dale, May 19 2018 *) CROSSREFS Cf. A008600. Sequence in context: A278716 A282814 A010857 * A243097 A040307 A022352 Adjacent sequences:  A158907 A158908 A158909 * A158911 A158912 A158913 KEYWORD nonn,less AUTHOR Paul Curtz, Mar 30 2009 EXTENSIONS Edited and extended by R. J. Mathar, Apr 03 2009 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified May 27 16:48 EDT 2022. Contains 354110 sequences. (Running on oeis4.)