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 A085550 Decimal expansion of (sqrt(13)-3)/2. 6

%I

%S 3,0,2,7,7,5,6,3,7,7,3,1,9,9,4,6,4,6,5,5,9,6,1,0,6,3,3,7,3,5,2,4,7,9,

%T 7,3,1,2,5,6,4,8,2,8,6,9,2,2,6,2,3,1,0,6,3,5,5,2,2,6,5,2,8,1,1,3,5,8,

%U 3,4,7,4,1,4,6,5,0,5,2,2,2,6,0,2,3,0,9,5,4,1,0,0,9,2,4,5,3,5,8,8,3,6,7,5,7

%N Decimal expansion of (sqrt(13)-3)/2.

%C This constant equals Sum_{k>=1} (-1)^(k-1)/(A006190(k)*A006190(k+1)). - _Vladimir Shevelev_, Feb 23 2013

%H Daniel Starodubtsev, <a href="/A085550/b085550.txt">Table of n, a(n) for n = 0..10000</a>

%H Cino Hilliard, <a href="http://groups.msn.com/BC2LCC/nreciprocalrecursion.msnw">+ N = Reciprocal Recursion</a> [broken link]

%e 0.30277563773199464655961...

%o (PARI) (sqrt(13)-3)/2 \\ _Michel Marcus_, Jan 16 2020

%Y Cf. A010470 (sqrt(13)).

%K easy,cons,nonn

%O 0,1

%A _Cino Hilliard_, Jul 04 2003

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Last modified August 6 12:33 EDT 2020. Contains 336246 sequences. (Running on oeis4.)