OFFSET
1,5
LINKS
Chai Wah Wu, Table of n, a(n) for n = 1..3003
Chai Wah Wu, Counting the number of isosceles triangles in rectangular regular grids, arXiv:1605.00180 [math.CO], 2016.
FORMULA
T(n,k) = 2*T(n,k-1)-T(n,k-2) for k > max(5,(n-1)^2).
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Chai Wah Wu, May 07 2016
STATUS
approved