OFFSET
1,1
COMMENTS
All terms are multiples of 5.
LINKS
Colin Barker, Table of n, a(n) for n = 1..250
Christian Aebi and Grant Cairns, Lattice equable quadrilaterals III: tangential and extangential cases, Integers (2023) Vol. 23, #A48.
Index entries for linear recurrences with constant coefficients, signature (7398,-1).
FORMULA
a(n) = 7398*a(n-1)-a(n-2).
G.f.: -5*(x-1) / (x^2-7398*x+1).
MATHEMATICA
LinearRecurrence[{7398, -1}, {5, 36985}, 20] (* Harvey P. Dale, Jan 14 2015 *)
PROG
(PARI) Vec(-5*(x-1)/(x^2-7398*x+1) + O(x^30))
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Colin Barker, Aug 25 2013
STATUS
approved