247669456896
domain: N
Appears in sequences
- Greatest common divisor of n! and n^n.at n=23A051696
- Numbers that are the product of the squares of some subset of their digits.at n=26A061863
- Expansion of 3*x*(1-x)*(1+2*x+6*x^2)/(1-24*x^3).at n=24A076509
- Least m with n*(n+1)/2 divisors.at n=21A081620
- Largest 3-smooth number dividing n!.at n=23A118381
- Largest 3-smooth number dividing n!.at n=24A118381
- Cancellation factor in reducing Sum_{k=0...n} n^k/k! to lowest terms.at n=23A214402
- Number of Euler tours of the complete digraph on n vertices.at n=4A232545
- Number of permutations p of [n] such that p(i)-i is a multiple of ten for all i in [n].at n=36A275065
- Start with 1; multiply alternately by 4 and 3.at n=21A282023
- a(n) = the smallest number m such that gcd(tau(m), sigma(m)) = n where tau(k) = the number of the divisors of k (A000005) and sigma(k) = the sum of the divisors of k (A000203).at n=22A324554