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A190591
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The coefficient of t^n in the power series solution of u in the equation -t+(1-t+t^2+t^3)*u-(t+t^4)*u^2+(t^3+t^5)*u^3-t^4*u^4=0.
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1
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0, 1, 1, 1, 1, 2, 4, 7, 12, 23, 47, 96, 195, 402, 843, 1781, 3772, 8020, 17143, 36810, 79304, 171368, 371450, 807516, 1760145, 3845770, 8421528, 18480552, 40634154, 89507024, 197496651, 436469232, 966043263, 2141158866, 4751978668
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OFFSET
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0,6
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LINKS
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MAPLE
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s:= solve(-t+(1-t+t^2+t^3)*u-(t+t^4)*u^2+(t^3+t^5)*u^3-t^4*u^4, u):
a:= n-> coeff(series(s, t, n+1), t, n):
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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This sequence was derived by Dr. Aaron Meyerowitz and submitted by Shanzhen Gao, May 13 2011
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STATUS
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approved
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