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 A246051 Triangle read by rows: numerator of h(n-k)*h(k)/h(n) where h(x) = zeta(2*x)*(4^x-2), 0<=k<=n. 4
 1, 1, 1, 1, 5, 1, 1, 49, 49, 1, 1, 310, 343, 310, 1, 1, 4191, 341, 341, 4191, 1, 1, 1162525, 2669667, 1374230, 2669667, 1162525, 1, 1, 1414477, 46501, 562991, 562991, 46501, 1414477, 1, 1, 13924700, 48092218, 1613300, 117628797, 1613300, 48092218, 13924700, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,5 LINKS Table of n, a(n) for n=0..44. EXAMPLE Triangle starts: 1 1, 1 1, 5, 1 1, 49, 49, 1 1, 310, 343, 310, 1 1, 4191, 341, 341, 4191, 1 MAPLE h := x -> Zeta(2*x)*(4^x-2); A246051 := (n, k) -> h(n-k)*h(k)/h(n); seq(print(seq(numer(A246051(n, k)), k=0..n)), n=0..8); PROG (Sage) h = lambda n: zeta(2*n)*(4^n-2) A246051 = lambda n, k: h(n-k)*h(k)/h(n) for n in range(8): [A246051(n, k).numerator() for k in (0..n)] CROSSREFS Cf. A246052 (denominators). Sequence in context: A322220 A174790 A156691 * A111820 A174912 A106238 Adjacent sequences: A246048 A246049 A246050 * A246052 A246053 A246054 KEYWORD nonn,frac,tabl AUTHOR Peter Luschny, Aug 11 2014 STATUS approved

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Last modified April 21 00:22 EDT 2024. Contains 371850 sequences. (Running on oeis4.)