11975040

Appears in sequences

• Expansion of e.g.f. 1/(1-2*x^2-x^3).at n=9A052684
• Expansion of e.g.f. (1 - 2*x*sqrt(1-4*x))*(1 - sqrt(1-4*x))/4.at n=8A052719
• Fifth column sequence of coefficient triangle A062137 of generalized Laguerre polynomials n!*L(n,3,x).at n=5A062143
• Denominator of the probability that the sum of n uniform picks on [0,1] is first greater than 2 (i.e., the sum of n-1 is not).at n=11A090138
• a(n) = (n+1)!/(d(n)*d(n+1)) where d(n) = cancellation factor in reducing Sum_{k=0...n} 1/k! to lowest terms.at n=11A123899
• a(n) = number of elements of order n in simple group Alt(12) of order 239500800.at n=19A145437
• Write 1 + sin x = Product_{n>=1} (1 + g_n * x^n); a(n) = denominator(g_n).at n=11A170915
• Coefficient triangle of polynomials recursively defined by P(n,x) = (n+1)*(n+1)! + x*Sum_{k=1..n} k^2*n!/(n+1-k)!*P(n-k,x) with P(0,x) = 1.at n=41A322970
• Numbers m such that sigma(m)/esigma(m) > sigma(k)/esigma(k) for all k < m, where sigma(m) is the sum of divisors of m (A000203) and esigma(m) is the sum of exponential divisors of m (A051377).at n=15A335396