914457600

Appears in sequences

• a(n) = n! * binomial(n,5).at n=5A001807
• a(n) = n! * lcm({1, 2, ..., n+1}).at n=9A002397
• a(n) = n!*(n+2)!/2.at n=7A010791
• Largest square dividing n!.at n=14A055071
• Diagonal T(s,s) of triangle A059836.at n=10A059837
• Numbers that are the product of the squares of some subset of their digits.at n=15A061863
• Product of entries in n-th row of triangle in A081454.at n=11A081456
• Greatest divisor d of n! such that d=m^k with k>1.at n=15A090630
• Expansion of e.g.f.: sqrt(1+2x)/sqrt(1-2x).at n=10A110491
• Numbers that are the product of the squares of their nonzero digits.at n=1A115385
• Bishops on an n X n board (see Robinson paper for details).at n=5A122747
• Square array T(n, k) = Product_{j=1..n} (1 - ChebyshevT(j, k+1)^2) with T(n, 0) = n!, read by antidiagonals.at n=19A156647
• a(0) = 1, a(n) = n*a(n-1)*A014963(n).at n=9A180170
• a(n) = (n!/floor(n/2)!)^2.at n=10A193282
• a(n) = n! times the denominator of the n-th harmonic number H(n).at n=8A316297
• a(n) is the denominator of Sum_{k=1..n} 1 / (k*k!).at n=8A354401
• a(n) is the denominator of Sum_{k=1..n} (-1)^(k+1) / (k*k!).at n=8A354404
• Numbers with a record number of non-unitary square divisors.at n=31A358253
• Triangle read by rows, (2, 3)-Lah numbers.at n=15A371259
• Smallest k for which the number of divisors d of k such that A000005(d) = A000005(k/d) is equal to n.at n=23A391603