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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
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
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Apr 15 2014
STATUS
approved