39177

Appears in sequences

• Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=17A207020
• Number of integers in n-th generation of tree T(1/3) defined in Comments.at n=43A274143
• Number of 2 X 2 matrices with all elements in {-n,..,0,..,n} with determinant = 2*permanent.at n=33A280343