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Search: id:A041145
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A041145 Denominators of continued fraction convergents to sqrt(82). +0
3
1, 18, 325, 5868, 105949, 1912950, 34539049, 623615832, 11259624025, 203296848282, 3670602893101, 66274148924100, 1196605283526901, 21605169252408318, 390089651826876625, 7043218902136187568 (list; graph; listen)
OFFSET

0,2

LINKS

Tanya Khovanova, Recursive Sequences

FORMULA

a(n)=F(n, 18), the n-th Fibonacci polynomial evaluated at x=18. - T. D. Noe (noe(AT)sspectra.com), Jan 19 2006

a(n)=18*a(n-1)+a(n-2), n>1 ; a(0)=1, a(1)=18 . G.f.: 1/(1-18*x-x^2). [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 21 2008]

MATHEMATICA

a=0; lst={}; s=0; Do[a=s-(a-1); AppendTo[lst, a]; s+=a*18, {n, 3*4!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Oct 27 2009]

CROSSREFS

Cf. A041144.

Sequence in context: A158532 A049660 A001027 this_sequence A041614 A166787 A068771

Adjacent sequences: A041142 A041143 A041144 this_sequence A041146 A041147 A041148

KEYWORD

nonn,cofr,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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