6502809600

Appears in sequences

• a(n) is the denominator of Sum_{k=0..n} Catalan(k)/(2^(2k)(n-k+1)^2).at n=8A282296
• a(n) is the denominator of Sum_{k=0..n} Catalan(k)/(2^(2k)(n-k+1)^2).at n=9A282296
• Triangle read by rows, coefficients of polynomials in Pi^2, given by trigonometric double integrals over the unit square.at n=22A336239
• Numbers with a record number of noninfinitary square divisors.at n=21A358263