230945

Appears in sequences

• Coefficients of Legendre polynomials.at n=9A001800
• Numerators in expansion of (1 - x)^(-3/2).at n=9A001803
• a(0) = 1; thereafter a(n) = denominator of (n-2)!! / (n-1)!!.at n=20A004731
• Denominator of average distance traveled by n-dimensional fly.at n=17A004735
• Squarefree part of n!: n! divided by its largest square divisor.at n=18A055204
• Numerators of inverse unimodal analog of binomial coefficients: binomial(n,m) = Sum_{k=0..n-m} a(2*k+m-1, 2*k).at n=56A072285
• Numerator of mean deviation of a symmetrical binomial distribution on n elements.at n=18A086116
• Numerator of mean deviation of a symmetrical binomial distribution on n elements.at n=19A086116
• Denominators of the average length of a line segment picked at random in the unit n-ball for odd n.at n=4A093531
• Table of denominators of coefficients of certain rational polynomials.at n=64A101023
• Divide n! repeatedly by i! for i from floor(n/2) down through 2; a(n) = remaining quotient.at n=19A111866
• a(1)=1, a(n) = LCM of the integers, from 1 to n/2, which are coprime to n.at n=41A124443
• Triangular table of numerators of the coefficients of Laguerre-Sonin polynomials L(1/2,n,x).at n=45A131440
• Cubefree part of n!.at n=20A145642
• Numerators of the column sums of the EG1 matrix coefficients.at n=8A162441
• Odd part of the swinging factorial A056040.at n=19A163590
• Squarefree part of ((2n-1)!)^(2n-3).at n=9A197880
• 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=15A203461
• Product of positive odd integers smaller than n and relatively prime to n.at n=20A209388
• Odd heptagonal pyramidal numbers.at n=16A218324