This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A106837 Numbers n such that both n and n+1 have odd part of form 4k+3. 5
 6, 11, 14, 22, 23, 27, 30, 38, 43, 46, 47, 54, 55, 59, 62, 70, 75, 78, 86, 87, 91, 94, 95, 102, 107, 110, 111, 118, 119, 123, 126, 134, 139, 142, 150, 151, 155, 158, 166, 171, 174, 175, 182, 183, 187, 190, 191, 198, 203, 206, 214, 215, 219, 222, 223, 230 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 EXAMPLE 30/2=15 is 3 mod 4 and so is 31, therefore 30 is in sequence. MATHEMATICA SequencePosition[Table[If[EvenQ[n], Mod[n/2^IntegerExponent[n, 2], 4], Mod[ n, 4]], {n, 250}], {3, 3}][[All, 1]] (* Requires Mathematica version 10 or later *)  (* Harvey P. Dale, Nov 20 2016 *) CROSSREFS Cf. A091067, A106838, A106840. Contains A106838 and A106838+1. Sequence in context: A315385 A315386 A315387 * A315388 A315389 A315390 Adjacent sequences:  A106834 A106835 A106836 * A106838 A106839 A106840 KEYWORD nonn AUTHOR Ralf Stephan, May 03 2005 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 May 25 11:17 EDT 2019. Contains 323539 sequences. (Running on oeis4.)