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 A109074 Numerator of binomial(6*n-2,2*n)/(2*binomial(4*n-1,2*n)). 2
 1, 1, 3, 26, 323, 2415, 26970, 66526, 717541, 278992987, 30741431, 753069156, 21291561634, 1258540885373, 11255629805034, 833378477982, 181778972767041, 101220208716435, 644821697046585, 4759584409762049637, 7692170694126370209, 19898042621084590853 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS It is conjectured that binomial(6*n-2,2*n)/(2*binomial(4*n-1,2*n)) = A005156(n+1)/A005156(n). REFERENCES D. M. Bressoud, Proofs and Confirmations, Camb. Univ. Press, 1999; see conjecture (6.18). LINKS EXAMPLE 1/2, 1, 3, 26/3, 323/13, 2415/34, 26970/133, 66526/115, 717541/435, 278992987/59334, 30741431/2294, ... CROSSREFS Cf. A134357, A005156. Sequence in context: A126738 A283298 A259610 * A227020 A119293 A136046 Adjacent sequences:  A109071 A109072 A109073 * A109075 A109076 A109077 KEYWORD nonn,frac AUTHOR N. J. A. Sloane, May 04 2008 STATUS approved

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