OFFSET
0,3
COMMENTS
a(n) is the determinant of the n X n matrix M with M(i,i)=2i-1, M(i,j)=i+j.
LINKS
Index entries for linear recurrences with constant coefficients, signature (-5,-10,-10,-5,-1).
FORMULA
MATHEMATICA
CoefficientList[Series[(1 + 6x + 9x^2 + 7x^3 + x^4)/(1 + x)^5, {x, 0, 50}], x]
LinearRecurrence[{-5, -10, -10, -5, -1}, {1, 1, -6, 17, -39}, 50] (* Harvey P. Dale, Jun 16 2023 *)
CROSSREFS
KEYWORD
easy,sign
AUTHOR
Mario Catalani (mario.catalani(AT)unito.it), Feb 12 2003
STATUS
approved