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A095695
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T(n,4) diagonal of triangle in A095693.
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0
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6, 130, 1005, 4830, 17465, 52101, 135135, 314985, 674685, 1349205, 2548546, 4587765, 7925190, 13210190, 21341970, 33540966, 51434520, 77158620, 113477595, 163923760, 232959111, 326161275, 450436025
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listen;
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OFFSET
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4,1
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REFERENCES
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Nicholas S. Horne, Analysis of Viable Network Configurations from a Combinatorial, Graphical and Algebraic Perspective, Diss. Providence College, 2004.
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LINKS
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FORMULA
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a(n) = ((n)(n-1)(n-2)(n-3)(n^4+2n^3-13n^2-54n+136)/384.
G.f.: -x^4*(11*x^4-39*x^3+51*x^2+76*x+6)/(x-1)^9. [Colin Barker, Nov 24 2012]
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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Nicholas S. Horne (nickhorne(AT)cox.net), Jul 06 2004
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STATUS
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approved
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