7983360

Appears in sequences

• Minimal value of |product(A) - product(B)| where A and B are a partition of {1,2,3,...,n}.at n=22A038667
• Denominators of coefficients in function a(x) such that a(a(x)) = arctan(x).at n=5A048604
• E.g.f. (2-3x)/((1-x)(1-x-x^2)).at n=9A052661
• Factorial splitting: write n! = x*y with x <= y and x maximal; sequence gives value of y-x.at n=21A061057
• Number of integers less than A000108(n) relatively prime to A000108(n).at n=16A062624
• a(n) = n!/A000793(n).at n=12A074115
• Number of elements of S_n having the maximum possible order g(n), where g(n) is Landau's function (A000793).at n=12A074859
• Triangle T(n,k), 0 <= k <= n, defined by T(n,k) = 2^k*A001497(n,k).at n=30A109767
• a(n) = denominator of (Sum_{k=1..n} H(2k)(2k)!/(k!(k+n+1)!) = Sum_{k=0..n-1} H(n-k)(2k)!/ (k!(k+n+1)!)), where H(k) = Sum_{j=1..k} 1/j (i.e., the k-th harmonic number).at n=5A124236
• a(n) = n!/A124901(n).at n=7A124903
• a(n) = (n+5)! / 5.at n=6A129923
• Triangular sequence based on A002301 and the alternating groups a prime -adic: t(n,m)=n!/Prime[m] for n>=Prime[m].at n=29A129925
• A triangular sequence based on expansion of the rational polynomial of A023054 as a Sheffer sequence: p(x,t)=Exp[x*t]*(1 - t^5)/((1 - t)*(1 - t^2)^2*(1 - t^3)).at n=45A138186
• Factorial of primes divided by prime numbers' respective places in the sequence of primes.at n=4A157132
• If S is countable finite set, we can define n as number of elements in S. There are n^n distinct functions f(S)->S. Each function has a fixed point, or an orbit in S. This sequence is a number of distinct functions g(S)->S, with largest orbit.at n=12A162682
• Table T(n,m) read by rows: the coefficient of [t^n x^m] of 2*n!*(n+2)!*exp(x*t)*( t*(1-exp(t))-exp(t) ) / (1-exp(t) ), 0<=m<=n+1.at n=64A176990
• Array T(n,m)= (n*m)!*Beta(n, m) read by antidiagonals.at n=17A177847
• Array T(n,m)= (n*m)!*Beta(n, m) read by antidiagonals.at n=18A177847
• Bi-unitary multiperfect numbers.at n=16A189000
• Duplicate of A124903.at n=7A197954