This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A144411 Odd nonprime gaps adjusted to be {2,1,0,-1}: a(n)=A067970(n)/2-2. 0
 2, 1, 1, 0, -1, 1, -1, 0, 1, 0, -1, 0, -1, 1, -1, 0, 1, -1, 0, 0, -1, 0, -1, -1, 0, 1, 1, 0, -1, -1, -1, -1, -1, 0, 0, -1, 1, -1, -1, -1, 1, -1, 0, -1, 0, 0, -1, 0, -1, 1, -1, -1, -1, 1, 1, -1, -1, -1, -1, 0, -1, -1, -1, -1, 0, 1, 0, -1, 1, -1, -1, -1, 0, -1, 0, -1, 0, -1, 1, -1, 0, 1, -1, -1, -1, 0, -1, -1, -1, -1, -1, 0, 1, 0, -1, -1, -1, -1, -1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA a(n)=A067970(n)/2-2. MATHEMATICA b = Flatten[Table[If[PrimeQ[2*n + 1], {}, 2*n + 1], {n, 0, 200}]]; c = Table[(b[[n + 1]] - b[[n]])/2 - 2, {n, 1, Length[b] - 1}] CROSSREFS Sequence in context: A142598 A274372 A037800 * A138253 A261447 A287325 Adjacent sequences:  A144408 A144409 A144410 * A144412 A144413 A144414 KEYWORD uned,sign AUTHOR Roger L. Bagula and Gary W. Adamson, Sep 30 2008 STATUS approved

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

Last modified September 18 20:22 EDT 2019. Contains 327181 sequences. (Running on oeis4.)