A240815 a(n) = index of first nonexisting term of the meta-Fibonacci sequence {f(1) = ... = f(n) = 1; 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.

14, 11, 12, 14, 45, 32, 50, 39, 81, 59, 70, 62, 58

Offset: 3

Author

N. J. A. Sloane, Apr 15 2014

Keywords

• nonn
• more

Comments

This is equal to A240812(n)+1. See that entry for further information.

Links

• B. Balamohan, A. Kuznetsov and S. Tanny, On the behavior of a variant of Hofstadter's Q-sequence, J. Integer Sequences, Vol. 10 (2007), #07.7.1.
• 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.
• Index entries for Hofstadter-type sequences

Crossrefs

See A240812 for another version.

A diagonal of the triangle in A240816.