269280

Appears in sequences

• Constant term in Atkin polynomial A_n(j).at n=2A145093
• a(n) = Fibonacci(n-1) * Fibonacci(n) * Fibonacci(n+2).at n=9A220362
• Irregular triangle read by rows: T(n,k) is the number of permutations of two copies of 1..n with the sum of the distances between equal numbers having total value n + 2*k, 0 <= k <= n*(n-1)/2.at n=30A335009