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 A162341 a(n) = number of grid points P(x,y) that are covered by a polyedge as the graph of the "mountain path" function for prime numbers, where x=n and y=0..oo. 11
 1, 1, 3, 1, 4, 2, 4, 2, 4, 4, 5, 3, 6, 2, 4, 4, 7, 3, 5, 4, 4, 3, 6, 4, 8, 5, 4, 2, 4, 2, 10, 8, 6, 3, 7, 5, 5, 5, 6, 4, 7, 3, 7, 5, 4, 2, 8, 11, 9, 2, 4, 4, 5, 5, 9, 5, 7, 3, 5, 4, 4, 5, 13, 8, 4, 2, 10, 9, 9, 5, 4, 4, 8, 6, 7, 4, 6, 6, 7, 5, 10, 5, 7, 5, 5, 4, 6, 6, 7, 2, 4, 7, 11, 5, 7, 5, 6, 8, 8, 9, 13, 7, 9 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Se also A162340. LINKS Table of n, a(n) for n=0..102. Omar E. Pol, Graph of the mountain path function for prime numbers FORMULA a(n) = A052288(n-2) + (-1)^n for n>=3. [From Nathaniel Johnston, Nov 06 2010] CROSSREFS Cf. A000040, A006005, A008578, A162200, A162201, A162202, A162203, A162340. Sequence in context: A155481 A075148 A210722 * A066728 A279161 A222046 Adjacent sequences: A162338 A162339 A162340 * A162342 A162343 A162344 KEYWORD nonn AUTHOR Omar E. Pol, Jul 01 2009 EXTENSIONS Edited by Omar E. Pol, Jul 05 2009 More terms from Nathaniel Johnston, Nov 06 2010 STATUS approved

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Last modified June 18 17:37 EDT 2024. Contains 373483 sequences. (Running on oeis4.)