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 A204419 y-values in the solutions to x^2 - 313*y^2 = 1. 0
 0, 1819380158564160, 117124856755987405647781716823680, 7540058082713667504003446125203741470945194284480, 485400601250164750241979240919394389707542655611270208094258863360 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 REFERENCES A. H. Beiler, Recreations in the Theory of Numbers, Dover, NY, 1996, p. 248. LINKS G. L. Honaker, Jr. and Chris Caldwell, Prime Curios! 313 Index entries for linear recurrences with constant coefficients, signature (64376241658269698, -1). FORMULA a(n) = 64376241658269698*a(n-1) - a(n-2) with a(1) = 0 and a(2) = 1819380158564160. G.f.: 1819380158564160*x^2/(1 - 64376241658269698*x + x^2). MATHEMATICA LinearRecurrence[{64376241658269698, -1}, {0, 1819380158564160}, 5] PROG (MAGMA) I:=[0, 1819380158564160]; [n le 2 select I[n] else 64376241658269698*Self(n-1)-Self(n-2): n in [1..10]]; // Vincenzo Librandi, May 16 2015 CROSSREFS Cf. A041591, A082393. Sequence in context: A257138 A288279 A318170 * A067495 A216910 A309111 Adjacent sequences:  A204416 A204417 A204418 * A204420 A204421 A204422 KEYWORD nonn,easy AUTHOR Arkadiusz Wesolowski, Jan 15 2012 STATUS approved

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Last modified December 15 22:02 EST 2019. Contains 330012 sequences. (Running on oeis4.)