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Search: id:A042741
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| A042741 |
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Denominators of continued fraction convergents to sqrt(901). |
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+0
2
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| 1, 60, 3601, 216120, 12970801, 778464180, 46720821601, 2804027760240, 168288386436001, 10100107213920300, 606174721221654001, 36380583380513160360, 2183441177552011275601, 131042851236501189696420, 7864754515367623393060801
(list; graph; listen)
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OFFSET
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0,2
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LINKS
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Tanya Khovanova, Recursive Sequences
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FORMULA
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a(n)=F(n, 60), the n-th Fibonacci polynomial evaluated at x=60. - T. D. Noe (noe(AT)sspectra.com), Jan 19 2006
a(n)=60*a(n-1)+a(n-2), n>1 ; a(0)=1, a(1)=60 . G.f.: 1/(1-60*x-x^2). [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 23 2008]
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MATHEMATICA
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a=0; lst={}; s=0; Do[a=s-(a-1); AppendTo[lst, a]; s+=a*60, {n, 3*4!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Nov 03 2009]
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CROSSREFS
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Cf. A042740.
Sequence in context: A004297 A053401 A159991 this_sequence A166772 A074076 A084274
Adjacent sequences: A042738 A042739 A042740 this_sequence A042742 A042743 A042744
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KEYWORD
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nonn,cofr,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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