OFFSET
1,5
EXAMPLE
Square array begins:
1, 1, 1, 1, 1, 1, ...
1, 2, 5, 12, 29, 70, ...
1, 3, 16, 75, 361, 1728, ...
1, 4, 45, 384, 3509, 31500, ...
1, 5, 121, 1805, 30976, 508805, ...
1, 6, 320, 8100, 261725, 7741440, ...
PROG
(PARI) default(realprecision, 120);
{T(n, k) = round(sqrt(prod(a=1, n-1, prod(b=1, k-1, 4*sin(a*Pi/n)^2+4*cos(b*Pi/k)^2))))}
KEYWORD
nonn,tabl
AUTHOR
Seiichi Manyama, Jan 11 2021
STATUS
approved