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A077851
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Expansion of (1-x)^(-1)/(1-2*x-2*x^3).
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1
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1, 3, 7, 17, 41, 97, 229, 541, 1277, 3013, 7109, 16773, 39573, 93365, 220277, 519701, 1226133, 2892821, 6825045, 16102357, 37990357, 89630805, 211466325, 498913365, 1177088341, 2777109333, 6552045397, 15458267477, 36470753621, 86045598037, 203007731029
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (3,-2,2,-2).
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MAPLE
| A052912 := proc(n) if n < 0 then 0; else coeftayl( 1/(1-2*x^3-2*x), x=0, n) ; end if; end proc:
A077851 := proc(n) 2*(2*A052912(n)+A052912(n-1)+A052912(n-2))-1 ; %/3 ; end proc:
seq(A077851(n), n=0..15) ; # R. J. Mathar, Mar 28 2011
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CROSSREFS
| Sequence in context: A000600 A192674 A131056 * A089737 A001333 A078057
Adjacent sequences: A077848 A077849 A077850 * A077852 A077853 A077854
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Nov 17 2002
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