56549

Appears in sequences

• Expansion of (theta_2(q)/theta_3(q))^4/16 in powers of q.at n=9A005798
• Number of binary arrangements without adjacent 1's on n X n array connected e-w ne-sw nw-se.at n=4A067963
• Expansion of (eta(q^4) / eta(q))^8 in powers of q.at n=8A092877
• Number of n X 5 binary arrays with no two ones adjacent horizontally, diagonally or antidiagonally.at n=4A228680
• T(n,k)=Number of nXk binary arrays with no two ones adjacent horizontally, diagonally or antidiagonally.at n=40A228683
• Number of 5 X n binary arrays with no two ones adjacent horizontally, diagonally or antidiagonally.at n=4A228686
• a(n) = [x^n] Product_{k>=1} ((1 + x^(2*k))/(1 - x^(2*k-1)))^n.at n=8A296044