178600

Appears in sequences

• a(n) = Sum_{k=0..floor(n/2)} T(n-k,k), T given by A026780.at n=21A026790
• Row sums in A082259.at n=19A082261
• Number of primitive Pythagorean triangles (x, y, z) with legs x < y < 10^n.at n=5A239581
• Number of n X 4 0..1 arrays with every element equal to 0, 2, 3 or 6 king-move adjacent elements, with upper left element zero.at n=16A297982