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A089808 a(n) = floor[ 1/((n*r) mod 1)], where r = phi^(-2) = (3 - sqrt(5))/2. +0
4
2, 1, 6, 1, 1, 3, 1, 17, 2, 1, 4, 1, 1, 2, 1, 8, 2, 1, 3, 1, 46, 2, 1, 5, 1, 1, 3, 1, 12, 2, 1, 4, 1, 1, 2, 1, 7, 1, 1, 3, 1, 23, 2, 1, 5, 1, 1, 2, 1, 10, 2, 1, 4, 1, 122, 2, 1, 6, 1, 1, 3, 1, 15, 2, 1, 4, 1, 1, 2, 1, 8, 1, 1, 3, 1, 33, 2, 1, 5, 1, 1, 3, 1, 11, 2, 1, 4, 1, 1, 2, 1, 7, 1, 1, 3, 1, 19, 2, 1, 5, 1 (list; graph; listen)
OFFSET

1,1

COMMENT

1. a(n) = 1 iff A024569 is not 1, (A024569 = 1, 4, 1, 2, 11, 1, 3, 1, 1...) 2. a(n) = 1 iff A078588 = 0. 3. a(n) = 1 iff A089809 = 1.

EXAMPLE

a(6) = 3. Take 6*r = 2.29179...( mod 1) = .29179...; invert = 3.42705...and delete the fractional part, getting 3.

CROSSREFS

Cf. A024569, A078588, A089809.

Sequence in context: A097407 A060480 A094673 this_sequence A139547 A126342 A082388

Adjacent sequences: A089805 A089806 A089807 this_sequence A089809 A089810 A089811

KEYWORD

nonn,easy

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Nov 11 2003

EXTENSIONS

More terms from Sam Alexander (amnalexander(AT)yahoo.com), Nov 16 2003

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Last modified December 19 21:04 EST 2009. Contains 171054 sequences.


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