This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A107909 Numbers having no consecutive zeros or no consecutive ones in binary representation. 11
 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 26, 27, 29, 30, 31, 32, 33, 34, 36, 37, 40, 41, 42, 43, 45, 46, 47, 53, 54, 55, 58, 59, 61, 62, 63, 64, 65, 66, 68, 69, 72, 73, 74, 80, 81, 82, 84, 85, 86, 87, 90, 91, 93, 94, 95, 106, 107, 109, 110, 111 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Union of A003754 and A003714, complement of A107911; a(A023548(n+2)) = A052940(n+1) for n>0; a(A001924(n)) = A000225(n) = 2^n - 1; a(A000126(n)) = A000079(n) = 2^n for n>0; A107910(n) = a(n+1) - a(n). LINKS Ivan Neretin, Table of n, a(n) for n = 0..10000 J. M. Dusel, Balanced parabolic quotients and branching rules for Demazure crystals, 2014. PROG (Perl) foreach \$n(1..100){\$_=sprintf("%b", \$n); print "\$n\n" if !m/11/||!m/00/} # Ivan Neretin, May 01 2016 CROSSREFS Cf. A007088, A107907. Sequence in context: A289812 A206551 A247762 * A255724 A285100 A067340 Adjacent sequences:  A107906 A107907 A107908 * A107910 A107911 A107912 KEYWORD nonn,base,easy AUTHOR Reinhard Zumkeller, May 28 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 October 16 13:09 EDT 2019. Contains 328065 sequences. (Running on oeis4.)