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A135537
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Period 4: repeat 7, 5, 2, 4.
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0
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7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4, 7, 5, 2, 4
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Terms of the simple continued fraction of 158/[19*sqrt(365)-341]. Decimal expansion of 76/101. [From Paolo P. Lava (paoloplava(AT)gmail.com), Aug 05 2009]
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FORMULA
| O.g.f.: [(x+5)/(x^2+1)+9(1-x)]/2. a(n) = [(-1)^[n/2]*A010686(n+1)+9]/2 . - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 23 2008
a(n)=(1/4)*{[(n+1) mod 4]+6*[(n+2) mod 4]+5*[(n+3) mod 4]}, with n>=0 - Paolo P. Lava (paoloplava(AT)gmail.com), Feb 25 2008
a(n)=9/2+[5/4-(1/4)*I]*I^n+[5/4+(1/4)*I]*(-I)^n, with n>=0 and I=sqrt(-1) - Paolo P. Lava (paoloplava(AT)gmail.com), Jul 17 2008
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MATHEMATICA
| Flatten[Table[{7, 5, 2, 4}, {20}]] (* From Harvey P. Dale, June 22 2011 *)
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CROSSREFS
| Cf. A021408, A010693; equals A135536 mod 9.
Sequence in context: A071876 A191503 A070404 * A112545 A021934 A021097
Adjacent sequences: A135534 A135535 A135536 * A135538 A135539 A135540
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KEYWORD
| nonn
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AUTHOR
| Paul Curtz (bpcrtz(AT)free.fr), Feb 22 2008
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