41088

Appears in sequences

• Number of (n+2) X 6 binary arrays avoiding patterns 001 and 110 in rows and columns.at n=5A202048
• Number of (n+2) X 8 binary arrays avoiding patterns 001 and 110 in rows and columns.at n=3A202050
• T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 001 and 110 in rows and columns.at n=39A202052
• T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 001 and 110 in rows and columns.at n=41A202052
• Triangle read by rows, arising in enumeration of permutations by cyclic valleys, cycles and fixed points.at n=19A217202
• Triangle read by rows, related to Bell numbers A000110: A216963 interlaced with A217202.at n=41A217205
• Number of (7+2) X (n+2) 0..3 arrays with every consecutive three elements in every row and diagonal having exactly two distinct values, and in every column and antidiagonal not having exactly two distinct values, and new values 0 upwards introduced in row major order.at n=28A252726
• G.f. A(x,y) satisfies: A(x,y) = x*y + A(x,x*y)^2, with A(0,y) = 1.at n=52A275670
• a(n) = Sum_{0<=i<j<k<=n} (i+j+k)!/(i!*j!*k!).at n=5A306432
• a(n) is the Euler totient function of the concatenation of 1,2,3,...,n.at n=5A366955