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A095695 T(n,4) diagonal of triangle in A095693. 0
6, 130, 1005, 4830, 17465, 52101, 135135, 314985, 674685, 1349205, 2548546, 4587765, 7925190, 13210190, 21341970, 33540966, 51434520, 77158620, 113477595, 163923760, 232959111, 326161275, 450436025 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

REFERENCES

Nicholas S. Horne, Analysis of Viable Network Configurations from a Combinatorial, Graphical and Algebraic Perspective, Diss. Providence College, 2004.

LINKS

Table of n, a(n) for n=4..26.

Index entries for linear recurrences with constant coefficients, signature (9,-36,84,-126,126,-84,36,-9,1).

FORMULA

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]

CROSSREFS

Sequence in context: A012842 A012638 A318528 * A156475 A000907 A188718

Adjacent sequences:  A095692 A095693 A095694 * A095696 A095697 A095698

KEYWORD

easy,nonn

AUTHOR

Nicholas S. Horne (nickhorne(AT)cox.net), Jul 06 2004

STATUS

approved

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Last modified January 19 21:47 EST 2020. Contains 331066 sequences. (Running on oeis4.)