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A175005
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Expansion of x/(1 - 4*x + 3*x^2 - 2*x^3).
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3
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0, 1, 4, 13, 42, 137, 448, 1465, 4790, 15661, 51204, 167413, 547362, 1789617, 5851208, 19130705, 62548430, 204504021, 668632204, 2186113613, 7147565882, 23369187097, 76406277968, 249812682345, 816770269670, 2670455587581
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OFFSET
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0,3
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COMMENTS
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The limiting ratio a(n+1)/a(n) is 3.269530842081143....
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LINKS
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FORMULA
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a(n) = 4*a(n-1) - 3*a(n-2) + 2*a(n-3), starting 0, 1, 4.
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PROG
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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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