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 A014306 a(n) = 0 if n of form m(m+1)(m+2)/6, otherwise 1. 39
 0, 0, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS a(A145397(n))=1; a(A000292(n))=0; a(n)=1-A023533(n). - Reinhard Zumkeller, Oct 14 2008 Characteristic function of A145397. LINKS Antti Karttunen, Table of n, a(n) for n = 0..65537 EXAMPLE From David A. Corneth, Oct 01 2018: (Start) For n = 0, floor((6*0-1) ^ (1/3)) = -1. binomial(-1 + 2, 3) = n so a(0) = 0. For n = 10, floor((6*n-1) ^ (1/3)) = 3. binomial(3 + 2, 3) = n so a(10) = 0. For n = 11, floor((6*n-1) ^ (1/3)) = 3. binomial(3 + 2, 3) != n so a(11) = 1. (End) PROG (PARI) A014306(n) = { my(k=0); while(binomial(k+2, 3)

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Last modified December 12 01:57 EST 2019. Contains 329948 sequences. (Running on oeis4.)