178474296

Appears in sequences

• a(n) = (2n+3)! /( n! * (n+1)! ).at n=10A000911
• a(n) = (2n+4)!/(4!*n!*(n+1)!).at n=10A002803
• a(n) = 6*(n+1)*binomial(n+2,12).at n=11A027785
• Triangle read by rows: T(n,k) = (2 * (binomial(n,k)) * (n + 2 * k + 3)!)/((k + 1)! * (k + 2)! * (n + 3)!).at n=42A087727
• Denominators of row sums in triangle described in A093412.at n=23A093419
• a(n) = lcm_{k=1..n} (lcm(n,n-1,...,n-k+2,n-k+1)/lcm(1,2,...,k)).at n=23A093432
• Denominator of -3*n + 2*(1+n)*HarmonicNumber(n).at n=24A096620
• Denominator of the Harary number for the path graph P_n.at n=24A160049
• Denominator of the average number of move operations required by an insertion sort of n (distinct) elements.at n=24A212397
• a(n) = 132*binomial(n,12).at n=23A213380
• Triangle read by rows: T(n, k) = v(n, k)*((1/v(n, k)) mod prime(k)), where v(n, k) = (Product_{j=1..n} prime(j))/prime(k), n >= 1, 1 <= k <= n.at n=38A240673
• a(n) = lcm(denominator(p(n, x))), where p(n, x) are the rational polynomials defined in A342321.at n=23A343277