2029052025

Appears in sequences

• First diagonal of A027447.at n=15A027451
• Denominator of Sum_{k=1..n} 1/(2*k-1)^2.at n=6A128492
• Denominators of the partial sums for the Catalan constant A006752: Sum_{k=0..n} ((-1)^k)/(2*k+1)^2, n >= 0.at n=6A294971
• Denominators of the partial sums for the Catalan constant A006752: Sum_{k=0..n} ((-1)^k)/(2*k+1)^2, n >= 0.at n=7A294971
• Denominator of the variance of the random number of comparisons in quicksort applied to lists of length n.at n=15A330907
• a(n) is the smallest odd number that has n middle divisors.at n=28A354385
• Square array read by upward antidiagonals: T(n, k) = denominator( 2*k!*(-2)^k*Sum_{m=1..n}( 1/(2*m-1)^(k+1) ) ).at n=47A370691