406425600
domain: N
Appears in sequences
- Sets record for f(n) = |{(a,b):a*b=n and a|b}|. Also squares of highly composite numbers A002182.at n=22A046952
- Row 2 of square array defined in A047675: 2*n!*(n+1)!.at n=7A047677
- Number of permutations of {1,2,...,n} with all odd entries preceding all even entries or all even entries preceding all odd entries.at n=15A152875
- Triangle of polynomial coefficients related to 3F2([1,n+1,n+1],[n+2,n+2],z).at n=22A162990
- The second left hand column of triangle A162990.at n=5A162993
- Perfect powers which are the product of distinct factorials.at n=4A227652
- a(n) is the least k such that A349281(k) = n.at n=13A349282
- Numbers with a record number of non-unitary square divisors.at n=27A358253
- Numbers with a record number of noninfinitary square divisors.at n=17A358263
- Triangle of denominators for rational convergents to Taylor series of 1/Gamma(x+1).at n=43A386676
- Perfect squares which are the product of three distinct factorials.at n=3A389555
- Perfect squares which are the product of four distinct factorials.at n=2A390005