590976100

Appears in sequences

• Squares of numbers in array formed from even elements to the right of middle of rows of Pascal triangle.at n=31A014762
• a(n) = binomial(n, floor(n/2))^2 = A001405(n)^2.at n=17A018224
• a(0) = 1; for n > 0, binomial(2n-1, n-1)^2.at n=9A060150
• Norm of coefficients in g.f. C(x) that satisfies: C(x) = 1 + x/C(I*x).at n=36A193384
• a(n) = binomial(n, floor((n-1)/2))^2.at n=17A378060
• a(n) = binomial(n - 1, ceiling(n/2)) * binomial(n - 1, ceiling(n/2) - 1).at n=18A378070