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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A091067 Numbers whose odd part is of the form 4k+3. 32
 3, 6, 7, 11, 12, 14, 15, 19, 22, 23, 24, 27, 28, 30, 31, 35, 38, 39, 43, 44, 46, 47, 48, 51, 54, 55, 56, 59, 60, 62, 63, 67, 70, 71, 75, 76, 78, 79, 83, 86, 87, 88, 91, 92, 94, 95, 96, 99, 102, 103, 107, 108, 110, 111, 112, 115, 118, 119, 120, 123, 124, 126, 127, 131 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Either of form 2*a(m) or 4k+3, k>=0, 0= 1 it holds that: A014707(a(n) + 1) = 1. - Reinhard Zumkeller, Sep 28 2011 A055975(a(n)) < 0. - Reinhard Zumkeller, Apr 28 2012 From Antti Karttunen, Feb 20-21 2015: (Start) a(n) = A246590(n)/2. A255070(a(n)) = n, or equally, A236840(a(n)) = 2n. a(n) = 1 + A255068(n-1). (End) PROG (PARI) for(n=1, 200, if(((n/2^valuation(n, 2)-1)/2)%2, print1(n", "))) (PARI) {a(n) = local(m, c); if( n<1, 0, c=0; m=1; while( c

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 July 3 22:23 EDT 2022. Contains 355058 sequences. (Running on oeis4.)