159667200

Appears in sequences

• a(n) = n! / 3.at n=9A002301
• Number of labeled Abelian groups of order n.at n=11A034382
• 4*Denominator of S(n)/Pi^n, where S(n) = Sum_{k=-inf..+inf} ((4k+1)^(-n)).at n=11A050971
• E.g.f. 1/((1-x)(1-x^3)).at n=11A052569
• a(0) = 0, a(n) = 4*n! for n > 0.at n=11A052578
• Expansion of e.g.f. (1-x^2)/(1-x^2-x^3).at n=11A052679
• Expansion of e.g.f. x/((1-x)*(1-x^3)).at n=11A052688
• a(n) = n! / (number of prime divisors of n, counted with multiplicity).at n=10A062349
• 2n! / number of divisors of n.at n=11A062833
• Number of integers in {1, 2, ..., n!} that are coprime to n.at n=11A074930
• Triangle T(n,k) of associated Lah numbers, n>=2, k=1..floor(n/2).at n=26A076126
• n! divided by prime whose index is the integer part of log(n).at n=9A089057
• E.g.f.: x/(1+x-x^3).at n=11A109581
• Triangular sequence based on A002301 and the alternating groups a prime -adic: t(n,m)=n!/Prime[m] for n>=Prime[m].at n=33A129925
• a(1)=1. a(n+1) = n!/lcm(a(1),a(2),...,a(n)).at n=22A131120
• Partial products of A027746.at n=18A175943
• Exponential Riordan array (1,4*x+6*x^2+4*x^3+x^4).at n=39A187084
• a(n) = n!/gcd(n,3).at n=11A194130
• Numbers n such that k!/n is prime for some k.at n=35A242516
• a(n) = n! * Sum_{d in D(n+1)} (-1)^(d+1)*(n+1)/d, D(n) the divisors of n.at n=11A265024