The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A240824 a(n) = index of first nonexisting term of the meta-Fibonacci sequence {f(k) = k for k <= n; f(k)=f(k-f(k-3))+f(k-f(k-n))} if that sequence is only defined for finitely many terms, or 0 if that sequence is infinite. 1
 21, 72, 35, 0, 47, 35, 37, 40, 91, 0, 143, 71, 92 (list; graph; refs; listen; history; text; internal format)
 OFFSET 3,1 COMMENTS a(6)=0 and a(12)=0 are only conjectures. Except for the zero entries, this is equal to A240820(n)+1. See that entry for further information. REFERENCES D. R. Hofstadter, Curious patterns and non-patterns in a family of meta-Fibonacci recursions, Lecture in Doron Zeilberger's Experimental Mathematics Seminar, Rutgers University, April 10 2014. LINKS D. R. Hofstadter, Curious patterns and non-patterns in a family of meta-Fibonacci recursions, Lecture in Doron Zeilberger's Experimental Mathematics Seminar, Rutgers University, April 10 2014; Part 1, Part 2. CROSSREFS See A240820 for another version. A diagonal of the triangle in A240825. Sequence in context: A187719 A156285 A160435 * A109357 A283802 A082041 Adjacent sequences:  A240821 A240822 A240823 * A240825 A240826 A240827 KEYWORD nonn,more AUTHOR N. J. A. Sloane, Apr 15 2014 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 November 26 12:37 EST 2020. Contains 338639 sequences. (Running on oeis4.)