55088

Appears in sequences

• 12-gonal (or dodecagonal) pyramidal numbers: a(n) = n*(n+1)*(10*n-7)/6.at n=32A007587
• a(n) = floor(((1+sqrt(3))/2)^n).at n=34A125895
• a(n) = 144*n^2 - 127*n + 28.at n=19A156719
• Triangle read by columns: Distinct classifications of N elements containing exactly R binary partitions.at n=32A171872
• Number of nX5 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically.at n=3A206933
• T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically.at n=31A206936
• Number of 4Xn 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically.at n=4A206937
• Number of ordered triples (w,x,y) with all terms in {-n, ..., -1, 1, ..., n} and 5w + x + y > 0.at n=24A211630
• Coordination sequence for (2,5,6) tiling of hyperbolic plane.at n=26A265065
• Irregular table read by rows: The number of k-faced polyhedra, where k >= 4, formed when a row of n adjacent cubes are internally cut by all the planes defined by any three of their vertices.at n=20A347918