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 A001955 Beatty sequence of 1 + 1/sqrt(11). (Formerly M0615 N0225) 2
 1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, 16, 18, 19, 20, 22, 23, 24, 26, 27, 28, 29, 31, 32, 33, 35, 36, 37, 39, 40, 41, 42, 44, 45, 46, 48, 49, 50, 52, 53, 54, 55, 57, 58, 59, 61, 62, 63, 65, 66, 67, 68, 70, 71, 72, 74, 75, 76, 78, 79, 80, 81, 83, 84, 85, 87, 88 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS From R. J. Mathar, Feb 12 2011: (Start) The value of 1+1/sqrt(11) = 1.30151134457.. is close to (sqrt(13)-1)/2 = 1.3027756377..., so the early terms of the sequence are similar to A184480. According to the Fraenkel article, the complementary sequence is defined by floor(n*(1+sqrt(11)). (End) REFERENCES N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). LINKS T. D. Noe, Table of n, a(n) for n = 1..10000 Ian G. Connell, A generalization of Wythoff's game, Canad. Math. Bull. 2 (1959) 181-190 A. S. Fraenkel, How to beat your Wythoff games' opponent on three fronts, Amer. Math. Monthly, 89 (1982), 353-361. MAPLE A001955 := proc(n) local x ; x := 1+1/sqrt(11) ; floor(n*x) ; end proc: # for the complementary sequence A001955compl := proc(n) local x ; x := 1+sqrt(11) ; floor(n*x) ; end proc: seq(A001955(n), n=1..100) ; # R. J. Mathar, Feb 12 2011 MATHEMATICA Table[Floor[n*(1 + 1/Sqrt[11])], {n, 1, 65}] CROSSREFS Sequence in context: A045671 A276341 A098572 * A184480 A194375 A188222 Adjacent sequences:  A001952 A001953 A001954 * A001956 A001957 A001958 KEYWORD nonn AUTHOR EXTENSIONS More terms from Robert G. Wilson v, Nov 02 2000 STATUS approved

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