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0, 0, 0, 1, 2, 3, 5, 7, 9, 11, 14, 17, 20, 24, 28, 32, 36, 41, 46, 51, 57, 63, 69, 75, 82, 89, 96, 104, 112, 120, 128, 137, 146, 155, 165, 175, 185, 195, 206, 217, 228, 240, 252, 264, 276, 289, 302, 315, 329, 343, 357, 371, 386, 401, 416, 432, 448
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,5
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LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (2,-1,0,0,0,0,1,-2,1).
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FORMULA
| a(n)= +2*a(n-1) -a(n-2) +a(n-7) -2*a(n-8) +a(n-9).
G.f.: -x^3*(1+x)*(x^2-x+1) / ( (x^6+x^5+x^4+x^3+x^2+x+1)*(x-1)^3 ).
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CROSSREFS
| Sequence in context: A127721 A065130 A023535 * A183140 A139282 A066824
Adjacent sequences: A056831 A056832 A056833 * A056835 A056836 A056837
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Sep 02 2000
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