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A240816 Triangle read by rows: T(n,k) (n >= 1, 1 <= k <= n) = index of first nonexisting term of the meta-Fibonacci sequence {f(1) = ... = f(n) = 1; f(i)=f(i-f(i-k))+f(i-f(i-n))} if that sequence is only defined for finitely many terms, or 0 if that sequence is infinite. 4
7, 0, 15, 165, 55, 14, 0, 0, 11, 12, 61, 38, 12, 13, 14, 2355, 31, 14, 14, 15, 16, 283, 64, 45, 15, 16, 18, 19, 1337, 369, 32, 16, 18, 19, 20 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The zero entries (except T(4,1)) are only conjectural.

Apart from the zero entries, equals A240813 + 1.

LINKS

Table of n, a(n) for n=1..35.

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

EXAMPLE

Triangle begins:

7,

0,15,

165,55,14,

0, 0,11,12,

61,38,12,13,14,

2355,31,14,14,15,16,

283,64,45,15,16,18,19,

1337,369,32,16,18,19,20

...

CROSSREFS

Diagonals give A240810, A240814, A240815.

See A240813 for another version.

Sequence in context: A240825 A243773 A097604 * A007393 A245543 A225949

Adjacent sequences:  A240813 A240814 A240815 * A240817 A240818 A240819

KEYWORD

nonn,tabl,more

AUTHOR

N. J. A. Sloane, Apr 15 2014

STATUS

approved

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Last modified May 31 06:22 EDT 2020. Contains 334747 sequences. (Running on oeis4.)