125168

Appears in sequences

• Number of 2-sided strip polypons with n cells.at n=38A151533
• Number of 2n X 4 0..3 arrays with values 0..3 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors.at n=6A198598
• Number of 2nX14 0..3 arrays with values 0..3 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors.at n=1A198603
• T(n,k)=Number of 2nX2k 0..3 arrays with values 0..3 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors.at n=29A198604
• T(n,k)=Number of 2nX2k 0..3 arrays with values 0..3 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors.at n=34A198604
• E.g.f. A(x) satisfies A(x) = exp( x * cosh(x * A(x)^2) ).at n=7A381407