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A144833 Lucas numbers with an equal number of odd and even digits. 2
18, 29, 47, 76, 1364, 271443, 710647, 12752043, 20633239, 33385282, 54018521, 2537720636, 62113250390418, 1803423556807921, 221806434537978679, 667714778405043259651218, 31368381450514812615027603 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..126

EXAMPLE

54018521 is a Lucas 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[ lu = LucasL@ n; If[ fQ@ lu, AppendTo[lst, lu]], {n, 300}]; lst (* Robert G. Wilson v, Sep 24 2008 *)

Select[LucasL[Range[150]], Count[IntegerDigits[#], _?OddQ] == Count[ IntegerDigits[ #], _?EvenQ]&] (* Harvey P. Dale, Dec 21 2016 *)

CROSSREFS

Cf. A000032, A144205, A144226.

Sequence in context: A259642 A045000 A205871 * A259635 A032612 A151700

Adjacent sequences:  A144830 A144831 A144832 * A144834 A144835 A144836

KEYWORD

nonn,base

AUTHOR

Parthasarathy Nambi, Sep 22 2008

EXTENSIONS

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

STATUS

approved

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Last modified March 26 05:43 EDT 2019. Contains 321481 sequences. (Running on oeis4.)