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A077832
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Expansion of 1/(1-2*x-3*x^2-3*x^3).
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2
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1, 2, 7, 23, 73, 236, 760, 2447, 7882, 25385, 81757, 263315, 848056, 2731328, 8796769, 28331690, 91247671, 293880719, 946499521, 3048384212, 9817909144, 31620469487, 101839819042, 327994773977, 1056370413541, 3402244606139, 10957584774832, 35291014608704
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OFFSET
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0,2
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LINKS
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PROG
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CROSSREFS
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Partial sums of S(n, x), x=1..17 see A077831 with links. Partial sums of S(n, 18) see A049664.
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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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