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A087629
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Generalized Jacobsthal sequence.
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1
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1, 1, 3, 2, 11, 21, 22, 85, 171, 170, 683, 1365, 1366, 5461, 10923, 10922, 43691, 87381, 87382, 349525, 699051, 699050, 2796203, 5592405, 5592406, 22369621, 44739243, 44739242, 178956971, 357913941, 357913942, 1431655765, 2863311531
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OFFSET
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0,3
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LINKS
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FORMULA
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G.f.: (4x^4-5x^3+3x^2+x+1)/(-8x^6-7x^3+1).
G.f.: ( -1-x-3*x^2+5*x^3-4*x^4 ) / ( (2*x-1)*(1+x)*(4*x^2+2*x+1)*(x^2-x+1) ). - R. J. Mathar, Dec 10 2014
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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