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 A134545 A051731 * A004736. 1
 1, 3, 1, 4, 2, 1, 7, 4, 2, 1, 6, 4, 3, 2, 1, 12, 8, 5, 3, 2, 1, 8, 6, 5, 4, 3, 2, 1, 15, 11, 8, 6, 4, 3, 2, 1, 13, 10, 8, 6, 5, 4, 3, 2, 1, 18, 14, 11, 9, 7, 5, 4, 3, 2, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row sums = A007437: (1, 4, 7, 14, 16, 31, ...). Left border = sigma(n), A000203: (1, 3, 4, 7, 6, 12, ...). LINKS Table of n, a(n) for n=1..55. FORMULA A051731 * A004736 as infinite lower triangular matrices. EXAMPLE First few rows of the triangle: 1; 3, 1; 4, 2, 1; 7, 4, 2, 1; 6, 4, 3, 2, 1; 12, 8, 5, 3, 2, 1; 8, 6, 5, 4, 3, 2, 1; 15, 11, 8, 6, 4, 3, 2, 1; ... CROSSREFS Cf. A051731, A004736, A007436, A000203. Sequence in context: A135821 A289205 A283866 * A174907 A237016 A135822 Adjacent sequences: A134542 A134543 A134544 * A134546 A134547 A134548 KEYWORD nonn,tabl,more AUTHOR Gary W. Adamson, Oct 31 2007 STATUS approved

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Last modified February 26 22:44 EST 2024. Contains 370354 sequences. (Running on oeis4.)