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A151899
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Periodic with period 6: repeat [0,0,1,1,1,2].
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2
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0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1, 1, 1, 2, 0, 0, 1
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,6
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FORMULA
| a(n)=a(n)=(1/18)*{7*(n mod 6)-2*[(n+1) mod 6]+[(n+2) mod 6]+[(n+3) mod 6]-2*[(n+4) mod 6]+[(n+5) mod 6]}, with n>=0 [From Paolo P. Lava (paoloplava(AT)gmail.com), Aug 04 2009]
a(n) = 5/6 -cos(Pi*n/3)/3 -sin(Pi*n/3)/sqrt(3) -cos(2*Pi*n/3)/3 -sin(2*Pi*n/3)/sqrt(3) -(-1)^n/6. - R. J. Mathar, Oct 08 2011
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MAPLE
| f := proc(n) local j; j:=n mod 6; if (j<=1) then 0 elif (j<=4) then 1 else 2; fi; end;
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CROSSREFS
| Cf. A151902, A151904-A151907.
Sequence in context: A037880 A140698 A124764 * A204263 A079632 A002654
Adjacent sequences: A151896 A151897 A151898 * A151900 A151901 A151902
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jul 31 2009
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