783511

Appears in sequences

• Number of perfect matchings in graph C_{13} X P_{2n}.at n=2A028484
• Number of perfect matchings in the P_4 X C_n graph.at n=10A252054
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where T(n,k) = Product_{a=1..n} Product_{b=1..k} (4*sin(a*Pi/(2*n+1))^2 + 4*cos(b*Pi/(2*k+1))^2).at n=42A340476
• a(n) is the number of isomorphism classes of genus 2 hyperelliptic curves over the finite field of order prime(n).at n=20A363840