

A240814


a(n) = index of first nonexisting term of the metaFibonacci sequence {f(1) = ... = f(n) = 1; f(k)=f(kf(k2))+f(kf(kn))} if that sequence is only defined for finitely many terms, or 0 if that sequence is infinite.


2



15, 55, 0, 38, 31, 64, 369, 48, 47, 109, 189, 119, 63, 210
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OFFSET

2,1


COMMENTS

a(4)=0 is only a conjecture.
Except for the zero entry, this is equal to A240811(n)+1. See that entry for further information.


REFERENCES

D. R. Hofstadter, Curious patterns and nonpatterns in a family of metaFibonacci recursions, Lecture in Doron Zeilberger's Experimental Mathematics Seminar, Rutgers University, April 10 2014.


LINKS

Table of n, a(n) for n=2..15.
D. R. Hofstadter, Curious patterns and nonpatterns in a family of metaFibonacci recursions, Lecture in Doron Zeilberger's Experimental Mathematics Seminar, Rutgers University, April 10 2014; Part 1, Part 2.
Index entries for Hofstadtertype sequences


CROSSREFS

See A240811 for another version.
A diagonal of the triangle in A240816.
Sequence in context: A059145 A086643 A296324 * A225509 A235533 A039369
Adjacent sequences: A240811 A240812 A240813 * A240815 A240816 A240817


KEYWORD

nonn,more


AUTHOR

N. J. A. Sloane, Apr 15 2014


STATUS

approved



