This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A276793 Indicator function for A003144. 7
 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0 COMMENTS a(n) = 1 iff n is a member of A003144. a(n+1) = 1 iff n is a member of A278041, for n >= 0. - Wolfdieter Lang, Dec 06 2018 LINKS N. J. A. Sloane, Table of n, a(n) for n = 0..10000 Wolfdieter Lang, The Tribonacci and ABC Representations of Numbers are Equivalent, arXiv preprint arXiv:1810.09787 [math.NT], 2018. FORMULA a(n+1) = (t(n) - 1)*(t(n) - 2)/2, for n >= 0, and a(0) = 0, where t(n) = A080843(n).  - Wolfdieter Lang, Dec 06 2018 CROSSREFS Cf. A003144, A080843, A276796, A278041. A276793(n)+A276794(n)+A276791(n)=1; A276796(n)+A276797(n)+A276798(n)=n+1. Sequence in context: A113217 A189219 A189008 * A285515 A190204 A189028 Adjacent sequences:  A276790 A276791 A276792 * A276794 A276795 A276796 KEYWORD nonn,easy AUTHOR N. J. A. Sloane, Oct 28 2016 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 August 25 05:19 EDT 2019. Contains 326318 sequences. (Running on oeis4.)