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 A134247 A007318 * triangle by rows, n-th row = (n-1) zeros followed by T(n), 1. 1
 1, 2, 1, 3, 5, 1, 4, 12, 9, 1, 5, 22, 30, 14, 1, 6, 35, 70, 60, 20, 1, 7, 51, 135, 170, 105, 27, 1, 8, 70, 231, 385, 350, 168, 35, 1, 9, 92, 364, 756, 910, 644, 252, 44, 1, 10, 117, 540, 1344, 2016, 1890, 1092, 360, 54, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Row sums = A072863: (1, 3, 9, 26, 72, 192, 496,...). LINKS FORMULA Binomial transform of an infinite lower triangular matrix having n-th row = (n-1) zeros followed by T(n), 1, where T(n) = n-th triangular number. EXAMPLE First few rows of the triangle are: 1; 2, 1; 3, 5, 1; 4, 12, 9, 1; 5, 22, 30, 14, 1; 6, 35, 70, 60, 20, 1; 7, 51, 135, 170, 105, 27, 1; ... CROSSREFS Cf. A072863, A000217. Sequence in context: A118243 A210233 A134081 * A210225 A180906 A153277 Adjacent sequences:  A134244 A134245 A134246 * A134248 A134249 A134250 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Oct 15 2007 STATUS approved

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