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A323268
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The sequence denoted by r_n used in the calculation of A323260.
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1
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0, 0, 0, 0, 2, 6, 28, 108, 444, 1792, 7282, 29538, 119888, 486512, 1974392, 8012464, 32516266, 131957670, 535511468, 2173215852, 8819357908, 35790772064, 145246329946, 589439543490, 2392067156800, 9707501550336, 39395042101392, 159873200546432, 648798399230418, 2632957627701382
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OFFSET
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1,5
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LINKS
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FORMULA
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Van'kov and Zhuravlyov give recurrences.
G.f.: -2*x^5*(x-1)/(1+x)/(x^5-7*x^4+5*x^3+3*x^2-5*x+1) . - R. J. Mathar, Jan 11 2019
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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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