OFFSET
1,3
EXAMPLE
Square array begins:
1, 1, 1, 1, 1, ...
8, 36, 200, 1156, 6728, ...
49, 625, 12544, 279841, 6385729, ...
288, 9216, 583200, 44408896, 3546167328, ...
1681, 130321, 24611521, 6059221281, 1612940640256, ...
PROG
(PARI) default(realprecision, 120);
T(n, k) = round(prod(a=1, n-1, prod(b=1, k, 4*sin(a*Pi/n)^2+4*sin((2*b-1)*Pi/(2*k))^2)));
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Seiichi Manyama, Feb 18 2021
STATUS
approved