80568576

Appears in sequences

• Perfect squares that are a product of two distinct triangular numbers.at n=29A169836
• Number of nX4 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.at n=29A207119
• Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having index change +-(.,.) 0,0 0,2 or 1,1.at n=8A264112