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A161823 Among any n lines on the plane, there exists a pair at an angle not more than a(n)degrees. 0
90, 60, 45, 36, 30, 26, 23, 20, 18, 17, 15, 14, 13, 12, 12, 11, 10, 10, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..97.

FORMULA

a(n)=Ceiling[180/n] for n>1.

CROSSREFS

Sequence in context: A332427 A033410 A008901 * A270173 A003899 A271233

Adjacent sequences:  A161820 A161821 A161822 * A161824 A161825 A161826

KEYWORD

nonn

AUTHOR

Srikanth K S, Jun 20 2009

STATUS

approved

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Last modified April 14 12:11 EDT 2021. Contains 342949 sequences. (Running on oeis4.)