155250

Appears in sequences

• McKay-Thompson series of class 25A for Monster.at n=41A058594
• Equals two maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..3 nX3 array.at n=5A220428
• T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..3 nXk array.at n=30A220430
• T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..3 nXk array.at n=33A220430
• Areas of nondegenerate triangles with perimeter A385737(n) whose side lengths are triangular numbers.at n=17A385872