A120521 a(n) = min{j : A120510(j) = n}.

1, 5, 6, 7, 12, 13, 14, 15, 17, 18, 19, 20, 22, 23, 24, 25, 31, 32, 33, 34, 36, 37, 38, 39, 41, 42, 43, 44, 46, 47, 48, 49, 52, 53, 54, 55, 57, 58, 59, 60, 62, 63, 64, 65, 67, 68, 69, 70, 73, 74

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) * (3 + 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 A120510(j) = n then return j; fi; od;
end proc;

Crossrefs

Cf. A120510, A120532.

Sequence in context: A028318 A154952 A037360 * A022566 A047320 A327301

Adjacent sequences: A120518 A120519 A120520 * A120522 A120523 A120524

Keyword

nonn

Author

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

Status

approved