OFFSET
7,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 7..1000
Index entries for linear recurrences with constant coefficients, signature (13,-67,174,-239,166,-50,4).
FORMULA
G.f.: -x^7/((x-1)*(2*x-1)*(2*x^2-4*x+1)*(x^3-9*x^2+6*x-1)).
MATHEMATICA
LinearRecurrence[{13, -67, 174, -239, 166, -50, 4}, {1, 13, 102, 629, 3366, 16422, 75140}, 30] (* Harvey P. Dale, Jul 21 2019 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Jul 06 2017
STATUS
approved