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A077880
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Expansion of (1-x)^(-1)/(1-2*x^2+x^3).
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1
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1, 1, 3, 2, 6, 2, 11, -1, 21, -12, 44, -44, 101, -131, 247, -362, 626, -970, 1615, -2565, 4201, -6744, 10968, -17688, 28681, -46343, 75051, -121366, 196446, -317782, 514259, -832009, 1346301, -2178276, 3524612, -5702852, 9227501, -14930315, 24157855, -39088130, 63246026, -102334114
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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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EXAMPLE
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1 + x + 3*x^2 + 2*x^3 + 6*x^4 + 2*x^5 + 11*x^6 - x^7 + 21*x^8 - 12*x^9 + 44*x^10 + ...
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MATHEMATICA
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PROG
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(PARI) {a(n) = fibonacci(1-n) + n} /* Michael Somos, Dec 31 2012 */
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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