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A120528 First differences of successive generalized meta-Fibonacci numbers A120506. 2
1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..75.

C. Deugau and F. Ruskey, Complete k-ary Trees and Generalized Meta-Fibonacci Sequences, J. Integer Seq., Vol. 12. [This is a later version than that in the GenMetaFib.html link]

C. Deugau and F. Ruskey, Complete k-ary Trees and Generalized Meta-Fibonacci Sequences

FORMULA

d(n) = 0 if node n is an inner node, or 1 if node n is a leaf.

g.f. z (1 + z^4 ( (1 - z^(2 * [1])) / (1 - z^[1]) + z^6 * (1 - z^(3 * [i]))/(1 - z^[1]) ( (1 - z^(2 * [2])) / (1 - z^[2]) + z^12 * (1 - z^(3 * [2]))/(1 - z^[2]) (..., where [i] = (3^i - 1) / 2.

g.f.: D(z) = z * (1 - z^3) * sum(prod(z^3 * (1 - z^(3 * [i])) / (1 - z^[i]), i=1..n), n=0..infinity), where [i] = (3^i - 1) / 2.

MAPLE

d := n -> if n=1 then 1 else A120506(n)-A120506(n-1) fi;

CROSSREFS

Cf. A120506, A120517.

Sequence in context: A166253 A159638 A187615 * A287663 A195376 A164950

Adjacent sequences:  A120525 A120526 A120527 * A120529 A120530 A120531

KEYWORD

nonn

AUTHOR

Frank Ruskey and Chris Deugau (deugaucj(AT)uvic.ca), Jun 20 2006

STATUS

approved

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Last modified October 20 22:44 EDT 2019. Contains 328291 sequences. (Running on oeis4.)