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 A067326 Fifth column of triangle A067323. 1
 14, 56, 202, 715, 2529, 8986, 32123, 115556, 418200, 1521976, 5567551, 20462525, 75528895, 279874350, 1040790135, 3883140600, 14531382060, 54529456320, 205146226200, 773608833894, 2923686178098, 11071970477876 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Also fifth diagonal of triangle A028364. LINKS Table of n, a(n) for n=0..21. FORMULA a(n)= A067323(n+4, 4)= C(n+5)-sum(C(k)*C(n+4-k), k=0..3), C(n) := A000108(n) (Catalan). G.f.: (c(x)^3)*(5+5*c(x)+3*c(x)^2+c(x)^3), with c(x) g.f. of A000108 (Catalan). CROSSREFS Cf. A067325 (fourth column). Sequence in context: A115129 A281200 A212341 * A202242 A041374 A070741 Adjacent sequences: A067323 A067324 A067325 * A067327 A067328 A067329 KEYWORD nonn,easy AUTHOR Wolfdieter Lang, Feb 05 2002 STATUS approved

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Last modified November 28 19:28 EST 2023. Contains 367419 sequences. (Running on oeis4.)