46472

Appears in sequences

• a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A026386.at n=7A026952
• Triangle T(n, k) = number of non-equivalent (mod D_4) binary n X n matrices with k pairwise not adjacent 1's; k=0,...,n^2.at n=66A232569
• Number of 3 X n 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4.at n=23A240395
• Triangle read by rows: T(n,k) = Sum_{i=n-k..n} C(k-1,n-i)*C(i,n-k)*C(2*i,i)/(i+1).at n=43A256640