A120517 a(n) = min{j : A120506(j) = n}.

1, 5, 6, 11, 12, 13, 15, 16, 17, 23, 24, 25, 27, 28, 29, 31, 32, 33, 36, 37, 38, 40, 41, 42, 44, 45, 46, 53, 54, 55, 57, 58, 59, 61, 62, 63, 66, 67, 68, 70, 71, 72, 74, 75, 76, 79, 80, 81, 83, 84

Offset

1,2

Links

Table of n, a(n) for n=1..50.

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

g.f.: P(z) = z / (1-z) * (1 + sum(z^(m^3) * (3 + 1 / (1 - z^(m^3))), m=0..infinity))

Maple

p := proc(n)
if n=1 then return 1; end if;
for j from p(n-1)+1 to infinity do
if A120505(j) = n then return j; fi; od;
end proc;

Crossrefs

Cf. A120506, A120528.

Sequence in context: A069170 A305293 A287265 * A246395 A337399 A139071

Adjacent sequences: A120514 A120515 A120516 * A120518 A120519 A120520

Keyword

nonn

Author

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

Status

approved