OFFSET
0,2
LINKS
J. Borowska, L. Lacinska, Recurrence form of determinant of a heptadiagonal symmetric Toeplitz matrix, J. Appl. Math. Comp. Mech. 13 (2014) 19-16, remark 1 with a=3, b=c=1.
Index entries for linear recurrences with constant coefficients, signature (2,2,-2,-2,1).
FORMULA
G.f.: ( -1-x ) / ( (x-1)*(x^4-x^3-3*x^2-x+1) ).
a(n)= 2*a(n-1) +2*a(n-2) -2*a(n-3) -2*a(n-4) +a(n-5).
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
R. J. Mathar, Jan 31 2023
STATUS
approved