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A257487
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Expansion of ( -4+15*x-8*x^2 ) / ( (x-1)*(x^2-4*x+1) ).
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1
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4, 5, 13, 44, 160, 593, 2209, 8240, 30748, 114749, 428245, 1598228, 5964664, 22260425, 83077033, 310047704, 1157113780, 4318407413, 16116515869, 60147656060, 224474108368, 837748777409, 3126521001265, 11668335227648, 43546819909324
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OFFSET
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0,1
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LINKS
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FORMULA
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MAPLE
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(5+sqrt(3))/4*(2-sqrt(3))^n+(5-sqrt(3))/4*(2+sqrt(3))^n+3/2 ;
expand(%) ;
end proc:
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PROG
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(PARI) Vec(( -4+15*x-8*x^2 ) / ( (x-1)*(x^2-4*x+1) ) + O(x^50)) \\ Michel Marcus, Apr 26 2015
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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