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 A126980 a(n) = 14*n + 47. 5
 47, 61, 75, 89, 103, 117, 131, 145, 159, 173, 187, 201, 215, 229, 243, 257, 271, 285, 299, 313, 327, 341, 355, 369, 383, 397, 411, 425, 439, 453, 467, 481, 495, 509, 523, 537, 551, 565, 579, 593, 607, 621, 635, 649, 663, 677, 691, 705, 719, 733, 747 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Superhighway created by 'LQTL Ant' L90R135L90R135 from iteration 47 where the Ant moves in a 'Moore neighborhood' (nine cells), the L indicates a left turn, the R a right turn, and the numerical value is the turn angle (in degrees) at each iteration. REFERENCES P. Sakar, "A Brief History of Cellular Automata," ACM Computing Surveys, vol. 32, 2000. S. Wolfram, A New Kind of Science, 1st ed. Il.: Wolfram Media Inc., 2002. LINKS Diana Mecum, Table of n, a(n) for n = 0..1000 Index entries for linear recurrences with constant coefficients, signature (2,-1). FORMULA From Chai Wah Wu, May 30 2016: (Start) a(n) = 2*a(n-1) - a(n-2) for n > 1. G.f.: (-33*x + 47)/(x - 1)^2. (End) E.g.f.: (47 + 14*x)*exp(x). - G. C. Greubel, May 30 2016 MATHEMATICA Table[14*n + 47, {n, 0, 60}] (* Stefan Steinerberger, Jun 17 2007 *) LinearRecurrence[{2, -1}, {47, 61}, 50] (* G. C. Greubel, May 30 2016 *) PROG (Magma) [14*n + 47: n in [0..60] ]; // Vincenzo Librandi, Jul 18 2011 CROSSREFS Cf. A017041, A019430, A094867, A126978, A126979. Sequence in context: A368077 A243430 A342093 * A354442 A354461 A039355 Adjacent sequences: A126977 A126978 A126979 * A126981 A126982 A126983 KEYWORD easy,nonn AUTHOR Robert H Barbour, Mar 20 2007, Jun 12 2007 EXTENSIONS More terms from Stefan Steinerberger and Diana L. Mecum, Jun 17 2007 STATUS approved

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Last modified September 7 19:53 EDT 2024. Contains 375749 sequences. (Running on oeis4.)