27376

Appears in sequences

• Expansion of (1-x)/(1-x-x^2-x^3+x^4).at n=21A052527
• Number of planar n X n X n binary triangular grids symmetric under 120-degree rotation with no more than 1 one in any 3 X 3 X 3 subtriangle.at n=16A153899
• Number of 16X16X16 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n.at n=1A166224
• Number of (n+1)X(1+1) 0..3 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock equal.at n=3A237293
• Number of (n+1)X(4+1) 0..3 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock equal.at n=0A237296
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock equal.at n=6A237299
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock equal.at n=9A237299
• Number of minimum total dominating sets in the n X n grid graph.at n=20A303142