A144205 Fibonacci numbers containing an equal number of odd and even digits.

21, 34, 89, 4181, 6765, 196418, 514229, 39088169, 7778742049, 139583862445, 365435296162, 10610209857723, 27777890035288, 44945570212853, 1304969544928657, 8944394323791464, 679891637638612258

Offset

1,1

Links

Robert G. Wilson v, Table of n, a(n) for n = 1..119

Example

139583862445 is a Fibonacci number with an equal number of odd and even digits.

Mathematica

fQ[n_] := Block[{id = IntegerDigits@ n}, Length@ Select[id, OddQ@ # &] == Length@ id/2]; lst = {}; Do[ fb = Fibonacci@ n; If[ fQ@ fb, AppendTo[lst, fb]], {n, 300}]; lst (* Robert G. Wilson v, Sep 24 2008 *)

Crossrefs

Cf. A000045, A199635 (indices of these Fibonacci numbers).

Sequence in context: A075735 A053409 A253910 * A261408 A008946 A095738

Adjacent sequences: A144202 A144203 A144204 * A144206 A144207 A144208

Keyword

nonn,base

Author

Parthasarathy Nambi, Sep 13 2008

Extensions

More terms from Robert G. Wilson v, Sep 24 2008

Status

approved