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A143564
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G.f. satisfies: A(x) = 1 + x*A(x)^4/A(-x)^3.
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1
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1, 1, 7, 31, 273, 1697, 16471, 116159, 1186081, 8928193, 94017703, 736522975, 7917810225, 63722594657, 695248655095, 5705316231551, 62944217175617, 524183926274433, 5833380674885959, 49141433498848159, 550674827214221137
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