

A190796


Number of digits in the minimal basephi representation of n.


1



1, 4, 5, 5, 8, 8, 9, 9, 9, 9, 9, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17
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OFFSET

1,2


COMMENTS

See A130600(n) for the digits in the minimal base phi representation of n.


LINKS

T. D. Noe, Table of n, a(n) for n = 1..1000


FORMULA

a(n) = A055778(n) + A133775(n).
a(n) <= 2 * ceiling( log(n) / log(phi) ) for n > 1.


MATHEMATICA

nn = 100; len = 2*Ceiling[Log[GoldenRatio, nn]]; Table[d = RealDigits[n, GoldenRatio, len]; last1 = Position[d[[1]], 1][[1, 1]]; last1, {n, 1, nn}]


CROSSREFS

Cf. A055778, A130600, A133775.
Sequence in context: A071570 A336047 A082448 * A070783 A198334 A055593
Adjacent sequences: A190793 A190794 A190795 * A190797 A190798 A190799


KEYWORD

nonn,base


AUTHOR

T. D. Noe, May 20 2011


STATUS

approved



