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Search: id:A136324
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| 0, 1, 1, 2, 5, 6, 21, 22, 85, 86, 341, 342, 1365, 1366, 5461, 5462, 21845, 21846, 87381, 87382, 349525, 349526, 1398101, 1398102, 5592405, 5592406, 22369621, 22369622, 89478485, 89478486, 357913941
(list; graph; listen)
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OFFSET
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0,4
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FORMULA
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a(n)=5a(n-2)-4a(n-4).
a(n)=1/6 - (1/2)*(-1)^n + (1/4)*2^n + (1/12)*(-2)^n; g.f.: (-3*x^3 + x^2 + x)/(4*x^4 - 5*x^2 + 1). - Lambert Herrgesell (zero815(AT)googlemail.com), Apr 19 2008
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CROSSREFS
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Adjacent sequences: A136321 A136322 A136323 this_sequence A136325 A136326 A136327
Sequence in context: A098871 A146477 A014454 this_sequence A128367 A137067 A008555
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KEYWORD
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nonn
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AUTHOR
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Paul Curtz (bpcrtz(AT)free.fr), Mar 26 2008
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EXTENSIONS
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More terms from Lambert Herrgesell (zero815(AT)googlemail.com), Apr 19 2008
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