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 A214206 a(n) = largest m such that m*(m+1)/2 <= 14*n. 5
 0, 4, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 17, 18, 19, 20, 20, 21, 21, 22, 23, 23, 24, 24, 25, 25, 26, 27, 27, 28, 28, 28, 29, 29, 30, 30, 31, 31, 32, 32, 32, 33, 33, 34, 34, 35, 35, 35, 36, 36, 36, 37, 37, 38, 38, 38, 39, 39, 39, 40, 40, 40, 41, 41, 41, 42, 42, 42, 43, 43, 43, 44, 44, 44, 45, 45, 45, 45, 46, 46, 46, 47, 47, 47, 48, 48, 48, 48, 49, 49, 49, 49, 50 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Created in an attempt to simplify the definition of certain sequences currently under review by the editors. LINKS Harvey P. Dale, Table of n, a(n) for n = 0..1000 FORMULA a(n) = A003056(14*n). - R. J. Mathar, Jul 09 2012 EXAMPLE 4*5/2 <= 14 but 5*6/2 > 14, so a(1)=4. MATHEMATICA Array[Floor[(Sqrt[1+112#]-1)/2]&, 100, 0] (* Harvey P. Dale, Dec 22 2012 *) CROSSREFS Sequence in context: A076680 A235623 A001074 * A026316 A283767 A174142 Adjacent sequences:  A214203 A214204 A214205 * A214207 A214208 A214209 KEYWORD nonn AUTHOR N. J. A. Sloane, Jul 08 2012 STATUS approved

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Last modified July 26 17:37 EDT 2021. Contains 346294 sequences. (Running on oeis4.)