75272

Appears in sequences

• Number of perfect matchings in graph C_{16} X P_{n}.at n=3A028487
• Number of perfect matchings in a certain class of graphs.at n=1A099778
• Number of perfect matchings in the C_{2n} X P_3 graph (C_{2n} is the cycle graph on 2n vertices and P_3 is the path graph on 3 vertices).at n=7A102091
• Number of perfect matchings of the (2n+1) X (2n+1) grid H_n with a central unit hole.at n=3A143659
• Members of A143610 for which both neighbors are squarefree.at n=21A166987
• Number of -1..1 arrays x(0..n-1) of n elements with zero sum and no two neighbors equal.at n=17A199697
• Number of (n+2)X5 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=3A203918
• Number of (n+2)X6 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=2A203919
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=17A203923
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=18A203923
• Number of (w,x,y,z) with all terms in {1,...,n} and |w-x|>|x-y|+|y-z|.at n=25A212573
• Pierce expansion of 84 - 48*sqrt(3).at n=6A219510
• Coordination sequence for (2,3,9) tiling of hyperbolic plane.at n=42A265059
• Triangle read by rows: The number of domino tilings of the (2n+1) X (2m+1) board with a central free square.at n=9A270668
• Numbers w + x + y + z where (w,x,y,z) are nonnegative solutions to the Diophantine equation w^2 + x^2 + y^2 + z^2 = w*x*y*z.at n=16A385713