24515700

Appears in sequences

• First numerator and then denominator of central elements of 1/2-Pascal triangle.at n=28A046222
• First denominator and then numerator of central elements of 1/2-Pascal triangle.at n=29A046223
• Distinct numbers seen when writing first numerator and then denominator of central elements of 1/2-Pascal triangle.at n=14A046224
• a(n) = lcm{1, ..., 2n} / binomial(2n, n).at n=25A068550
• Denominator of Sum_{i+j+k=n, i,j,k>=1} (i*j)/k.at n=26A076175
• Number of 4-cycles in the n-tetrahedral graph.at n=25A289792