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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 June 16 14:12 EDT 2024. Contains 373430 sequences. (Running on oeis4.)