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 A208152 Triangle by rows, generated from the Ruler sequence A001511. 0
 1, 1, 1, 3, 2, 1, 6, 4, 1, 1, 24, 16, 4, 3, 1, 48, 32, 8, 6, 1, 1, 144, 96, 24, 18, 3, 2, 1, 188, 192, 48, 36, 6, 4, 1, 1, 1440, 960, 240, 180, 30, 20, 5, 4, 1, 2880, 1920, 480, 360, 60, 10, 8, 1, 1, 8640, 5760, 1440, 1080, 180, 120, 30, 24, 3, 2, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 COMMENTS Row sums = A208147: (1, 2, 6, 12, 48, 96, 288, ...). LINKS Table of n, a(n) for n=1..65. FORMULA Inverse of: 1; -1, 1; -1, -2, 1; -1, -2, -1, 1; -1, -2, -1, -3, 1; -1, -2, -1, -3, -1, 1; -1, -2, -1, -3, -1, -2, 1; ..., where the signed terms are negatives of A001511 terms: (1, 2, 1, 3, 1, 2, 1, 4, ...). EXAMPLE First few rows of the triangle = 1; 1, 1; 3, 2, 1; 6, 4, 1, 1; 24, 16, 4, 3, 1; 48, 32, 8, 6, 1, 1; 144, 96, 24, 18, 3, 2, 1; 288, 192, 48, 36, 6, 4, 1, 1; 1440, 960, 240, 180, 30, 20, 5, 4, 1; 2880, 1920, 480, 360, 60, 40, 10, 8, 1, 1; 8640, 5760, 1440, 1080, 180, 120, 30, 24, 3, 2, 1; ... CROSSREFS Cf. A001511, A208147. Sequence in context: A323417 A102189 A031252 * A194761 A129674 A120771 Adjacent sequences: A208149 A208150 A208151 * A208153 A208154 A208155 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Feb 23 2012 STATUS approved

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Last modified June 2 22:56 EDT 2023. Contains 363102 sequences. (Running on oeis4.)