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A047254
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Numbers that are congruent to {2, 3, 5} mod 6.
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0
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2, 3, 5, 8, 9, 11, 14, 15, 17, 20, 21, 23, 26, 27, 29, 32, 33, 35, 38, 39, 41, 44, 45, 47, 50, 51, 53, 56, 57, 59, 62, 63, 65, 68, 69, 71, 74, 75, 77, 80, 81, 83, 86, 87, 89, 92, 93, 95, 98, 99, 101, 104, 105, 107, 110, 111, 113, 116, 117, 119, 122, 123, 125, 128, 129
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (1,0,1,-1).
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FORMULA
| For n>0: a(n) = greatest m<=2*(n+1) coprime to a(n-1). - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 31 2005
G.f. x*(x+2)*(1+x^2) / ( (1+x+x^2)*(x-1)^2 ). - R. J. Mathar, Oct 08 2011
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PROG
| (MAGMA) [ n: n in [0..150] | n mod 6 in {2, 3, 5} ]; [From Vincenzo Librandi, Dec 25 2010]
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CROSSREFS
| Sequence in context: A096974 A027756 A119863 * A051214 A192391 A013634
Adjacent sequences: A047251 A047252 A047253 * A047255 A047256 A047257
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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