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A040613
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Continued fraction for sqrt(639).
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0
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25, 3, 1, 1, 2, 4, 4, 1, 4, 1, 4, 4, 2, 1, 1, 3, 50, 3, 1, 1, 2, 4, 4, 1, 4, 1, 4, 4, 2, 1, 1, 3, 50, 3, 1, 1, 2, 4, 4, 1, 4, 1, 4, 4, 2, 1, 1, 3, 50, 3, 1, 1, 2, 4, 4, 1, 4, 1, 4, 4, 2, 1, 1, 3, 50, 3, 1, 1, 2, 4, 4, 1, 4, 1, 4, 4, 2, 1, 1, 3, 50, 3, 1, 1, 2, 4, 4, 1, 4, 1
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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LINKS
| Index entries for continued fractions for constants
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FORMULA
| a(n)=(1/960)*{-2777*(n mod 16)-77*[(n+1) mod 16]+43*[(n+2) mod 16]+103*[(n+3) mod 16]+163*[(n+4) mod 16]+43*[(n+5) mod 16]-137*[(n+6) mod 16]+223*[(n+7) mod 16]-137*[(n+8) mod 16]+223*[(n+9) mod 16]+43*[(n+10) mod 16]-77*[(n+11) mod 16]-17*[(n+12) mod 16]+43*[(n+13) mod 16]+163*[(n+14) mod 16]+2863*[(n+15) mod 16]}-25*[C(2*n,n) mod 2], with n>=0 [From Paolo P. Lava (paoloplava(AT)gmail.com), May 15 2009]
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MAPLE
| with(numtheory): Digits := 300: convert(evalf(sqrt(639)), confrac);
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CROSSREFS
| Sequence in context: A040623 A094582 A040624 * A040612 A040614 A040615
Adjacent sequences: A040610 A040611 A040612 * A040614 A040615 A040616
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KEYWORD
| nonn,cofr,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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