A120515 a(n) = min{j : A120504(j) = n}.

1, 3, 4, 7, 8, 9, 11, 12, 13, 17, 18, 19, 21, 22, 23, 25, 26, 27, 30, 31, 32, 34, 35, 36, 38, 39, 40, 45, 46, 47, 49, 50, 51, 53, 54, 55, 58, 59, 60, 62, 63, 64, 66, 67, 68, 71, 72, 73, 75, 76

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) * (1 + 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 A120504(j) = n then return j; fi; od;
end proc;

Crossrefs

Cf. A120504, A120526.

Sequence in context: A061094 A100991 A075821 * A047545 A296352 A192052

Adjacent sequences: A120512 A120513 A120514 * A120516 A120517 A120518

Keyword

nonn

Author

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

Status

approved