

A104626


Numbers having three 1's in their basephi representation.


4



4, 5, 6, 8, 19, 48, 124, 323, 844, 2208, 5779, 15128, 39604, 103683, 271444, 710648, 1860499, 4870848, 12752044, 33385283, 87403804, 228826128, 599074579, 1568397608, 4106118244, 10749957123, 28143753124, 73681302248
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..28.
Wikipedia, Golden ratio base
Eric Weisstein's World of Mathematics, Phi Number System


FORMULA

{n: A055778(n) = 3}.  R. J. Mathar, Sep 05 2010
a(n) = Lucas(2n4) + 1, for n>3.  Ralf Stephan, Nov 13 2010


CROSSREFS

Cf. A005248, A104627, A104628, A065034.
Sequence in context: A006756 A067652 A080805 * A242955 A086726 A078885
Adjacent sequences: A104623 A104624 A104625 * A104627 A104628 A104629


KEYWORD

nonn


AUTHOR

Eric W. Weisstein, Mar 17 2005


EXTENSIONS

Terms 5 and 6 added by Jaroslav Krizek, May 25 2010
Edited by R. J. Mathar, Sep 05 2010


STATUS

approved



