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 A279367 Numbers n for which the number of distinct prime divisors of binomial(n,k) has a "local maximum" (see the unusual meaning given in comment) at k = floor(n/2). 1
 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 30, 31, 32, 33, 35, 36, 37, 39, 40, 41, 42, 43, 47, 48, 49, 50, 55, 56, 57, 58, 59, 63, 64, 65, 66, 67, 68, 71, 72, 73, 75, 76, 80, 83, 84, 85, 86, 89, 90, 91, 96, 97, 98, 99, 100, 107, 108, 109, 119 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The expression "local maximum" is understood here in a broad sense (as it were considering a flat-topped hill to be the same as a pointed hill): it is assumed that there is a local maximum a(n1) = a1 at n=n1 if there exists a neighborhood of n1 where the sequence is of the form {a0, a1, ..., a1, a2} with a0 y] || # == 1&] CROSSREFS Cf. A001221, A019491, A020731. Sequence in context: A052040 A328781 A069570 * A020731 A229300 A229301 Adjacent sequences:  A279364 A279365 A279366 * A279368 A279369 A279370 KEYWORD nonn AUTHOR Jean-François Alcover, Dec 10 2016 STATUS approved

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Last modified April 13 15:23 EDT 2021. Contains 342936 sequences. (Running on oeis4.)