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 A129372 Triangle read by rows: T(n,k) = 1 if k divides n and n/k is odd, T(n,k) = 0 otherwise. 8
 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row sums = A001227: (1, 1, 2, 1, 2, 2, 2, 1, 3, 2,...). LINKS Andrew Howroyd, Table of n, a(n) for n = 1..1275 FORMULA Equals A051731 * A115359. EXAMPLE First few rows of the triangle are: 1; 0, 1; 1, 0, 1; 0, 0, 0, 1; 1, 0, 0, 0, 1; 0, 1, 0, 0, 0, 1; 1, 0, 0, 0, 0, 0, 1; 0, 0, 0, 0, 0, 0, 0, 1; 1, 0, 1, 0, 0, 0, 0, 0, 1; ... PROG (PARI) T(n, k)=if(n%k, 0, n/k%2==1) \\ Andrew Howroyd, Aug 10 2018 CROSSREFS Cf. A051731, A115359. Sequence in context: A102511 A266669 A129360 * A169591 A189295 A004539 Adjacent sequences:  A129369 A129370 A129371 * A129373 A129374 A129375 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Apr 11 2007 EXTENSIONS Name changed and terms a(56) and beyond from Andrew Howroyd, Aug 10 2018 STATUS approved

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Last modified October 18 05:31 EDT 2019. Contains 328146 sequences. (Running on oeis4.)