553807

Appears in sequences

• Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,1,1,0,0 for x=0,1,2,3,4.at n=8A197314
• Number of length n+3 0..n arrays with no four elements in a row with pattern abba (with a!=b) and new values 0..n introduced in 0..n order.at n=7A243382
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + b(n-2), where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=23A294550