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 A182976 Denominators of fractions with the same position in A020652/A038567 and A182972/A182973. 7
 2, 3, 5, 23, 73, 143, 163, 235, 477, 1238, 4175, 4641, 7820, 11217, 25915, 37643, 95299, 576088, 1203677 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The positions of the matching fractions are given in A182974. The numerators of the matching fractions are given in A182975. The initial (zeroth) term of A038567 is ignored. REFERENCES S. Cook, Problem 511: An Enumeration Problem, Journal of Recreational Mathematics, Vol. 9:2 (1976-77), 137. Solution by the Problem Editor, JRM, Vol. 10:2 (1977-78), 122-123. LINKS Table of n, a(n) for n=1..19. Paul Yiu, Recreational Mathematics, 24.3.1 Appendix: Two enumerations of the rational numbers in (0,1), page 633. EXAMPLE The matching fractions are 1/2, 1/3, 2/5, 9/23, 30/73, 59/143 ... (this is A182975/A182976). CROSSREFS Cf. A020652, A038567, A182972-A182975. Sequence in context: A171432 A214703 A327700 * A042363 A208220 A138655 Adjacent sequences: A182973 A182974 A182975 * A182977 A182978 A182979 KEYWORD nonn,frac,more AUTHOR William Rex Marshall, Dec 16 2010 STATUS approved

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Last modified May 24 12:09 EDT 2024. Contains 372773 sequences. (Running on oeis4.)