A095695 T(n,4) diagonal of triangle in A095693.

6, 130, 1005, 4830, 17465, 52101, 135135, 314985, 674685, 1349205, 2548546, 4587765, 7925190, 13210190, 21341970, 33540966, 51434520, 77158620, 113477595, 163923760, 232959111, 326161275, 450436025

Offset: 4

Author

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

Keywords

• easy
• nonn

References

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

Links

• 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+2*n^3-13*n^2-54*n+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