715392

Appears in sequences

• Number of n X 3 0..2 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.at n=5A268899
• T(n,k)=Number of nXk 0..2 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.at n=33A268904
• Number of 6Xn 0..2 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.at n=2A268909
• G.f. satisfies: A(x) = 1 + 4*x*AGM(A(x), A(x)^3).at n=6A272823
• Expansion of e.g.f. (1 + 2 * log(1 - x))^2.at n=9A375990