107080

Appears in sequences

• Number of n X n array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.at n=3A189643
• Number of n X 4 array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.at n=3A189645
• T(n,k) = Number of n X k array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.at n=24A189650
• Number of 4Xn array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.at n=3A189652
• Number of n X 4 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and rows and columns lexicographically nondecreasing.at n=11A229441
• Number of n X n {0,1,2,3} matrices having no 1's to the right of any 0's and no 3's above any 2's.at n=3A383255
• G.f. satisfies A(x) = x + Product_{n>=2} A(x^n) with A(0) = 1.at n=50A385635