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A047242
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Numbers that are congruent to {0, 1, 3} mod 6.
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4
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0, 1, 3, 6, 7, 9, 12, 13, 15, 18, 19, 21, 24, 25, 27, 30, 31, 33, 36, 37, 39, 42, 43, 45, 48, 49, 51, 54, 55, 57, 60, 61, 63, 66, 67, 69, 72, 73, 75, 78, 79, 81, 84, 85, 87, 90, 91, 93, 96, 97, 99, 102, 103, 105, 108, 109, 111, 114, 115, 117, 120, 121, 123
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (1,0,1,-1)
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FORMULA
| Equals partial sums of (0, 1, 2, 3, 1, 2, 3, 1, 2, 3,...). - Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 19 2008
G.f. x^2*(1+2*x+3*x^2) / ( (1+x+x^2)*(x-1)^2 ). - R. J. Mathar, Oct 08 2011
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MATHEMATICA
| Select[Range[0, 200], Mod[#, 6] == 0 || Mod[#, 6] == 1 || Mod[#, 6] == 3 &] (* From Vladimir Joseph Stephan Orlovsky, Jul 07 2011 *)
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CROSSREFS
| Cf. A047234, A047240.
Sequence in context: A135412 A191990 A082847 * A190335 A083951 A131392
Adjacent sequences: A047239 A047240 A047241 * A047243 A047244 A047245
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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