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A192306
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1-sequence of reduction of (2n) by x^2 -> x+1.
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1
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0, 4, 10, 26, 56, 116, 228, 436, 814, 1494, 2704, 4840, 8584, 15108, 26418, 45938, 79496, 136988, 235180, 402420, 686550, 1168174, 1982880, 3358416, 5676816, 9578116, 16133338, 27132746, 45565784, 76419524, 128006004, 214167220, 357935614
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OFFSET
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1,2
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COMMENTS
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See A192232 for definition of "k-sequence of reduction of [sequence] by [substitution]".
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LINKS
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FORMULA
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G.f.: 2*x*(2-x)/((1-x)*(1-x-x^2)^2). [Colin Barker, Feb 11 2012]
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MATHEMATICA
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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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