138567

Appears in sequences

• Denominators of continued fraction convergents to fifth root of 5.at n=13A002363
• Number of nonempty subsets of {1,2,...,n} in which exactly 3/4 of the elements are <= n/2.at n=24A047164
• Number of nonempty subsets of {1,2,...,n} in which exactly 3/4 of the elements are <= (n-1)/2.at n=24A047175
• a(n) is the n-th primorial divided by squarefree kernel of corresponding central binomial coefficient.at n=7A056607
• Successive maxima in sequence A007365.at n=28A065933
• Triangular table of numerators of the coefficients of Laguerre-Sonin polynomials L(1/2,n,x).at n=47A131440
• Numerators in expansion of (1-x)^(-7/2).at n=7A161201
• Let a(n) and the ratio r(n) = greatest prime divisor of a(n) / sum of the distinct prime divisors of a(n). The sequence a(n) is defined by the recurrence a(1) = 2, a(n+1) such that r(n+1) < r(n).at n=14A203461
• Triangle read by rows, T(n,k) = denominator(binomial(1/2,n-k))*binomial(n+1/2, k+1/2), for n>=0 and 0<=k<=n.at n=47A269950
• Triangle read by rows, T(n,k) = denominator(binomial(1/2,n-k))*binomial(n+1/2, k+1/2), for n>=0 and 0<=k<=n.at n=48A269950
• a(n) = Catalan(n-1)*Motzkin(n).at n=7A290442
• Squarefree part of 1!*2!*3!*...*n!: The product of factorials one through n divided by its largest square divisor.at n=20A299700