A120519 a(n) = min{j : A120508(j) = n}.

1, 3, 4, 5, 8, 9, 10, 11, 13, 14, 15, 16, 18, 19, 20, 21, 25, 26, 27, 28, 30, 31, 32, 33, 35, 36, 37, 38, 40, 41, 42, 43, 46, 47, 48, 49, 51, 52, 53, 54, 56, 57, 58, 59, 61, 62, 63, 64, 67, 68

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^4) * (1 + 1 / (1 - z^(m^4))), 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 A120508(j) = n then return j; fi; od;
end proc;

Crossrefs

Cf. A120508, A120530.

Sequence in context: A286053 A112594 A188003 * A100614 A274231 A173999

Adjacent sequences: A120516 A120517 A120518 * A120520 A120521 A120522

Keyword

nonn

Author

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

Status

approved