460800

Appears in sequences

• Triangle of coefficients of certain exponential convolution polynomials.at n=16A048786
• a(n) = (-1)^(n+1) * 2^n * n!^2.at n=5A055546
• a(n) is the number of divisors of n!*(n! + 1)/2.at n=21A063101
• Unreduced numerator of Sum[k=1..n, -(-1)^k/(F(k)*F(k+1))], with F(i) = A000045(i) the Fibonacci numbers.at n=5A095917
• Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} with k parity changes (n>=2; 1<=k <=n-1); the permutation 372185946 has 5 parity changes: 37-2-1-8-59-46.at n=38A152874
• Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} with k parity changes (n>=2; 1<=k <=n-1); the permutation 372185946 has 5 parity changes: 37-2-1-8-59-46.at n=42A152874
• Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having k consecutive triples of the form (odd,even,odd) and (even,odd,even) (0<=k<=n-2).at n=42A152877
• Number of ways to place 2 nonattacking queens on an n X n toroidal board.at n=31A172517
• a(0)=1. For n >=1, a(n) = the smallest positive multiple of a(n-1) such that (the n-th prime)+a(n) is prime.at n=20A175195
• a(n) = Product_{d | n} tau(d).at n=47A211776
• G.f.: Sum_{n>=0} (4*n+3)^n * x^n / (1 + (4*n+3)*x)^n.at n=5A221161
• Derived from von Mangoldt matrix sequence.at n=10A227866
• Triangle read by rows, T(n,k) = ((-1)^k*(2*n)!/4^k)*P[n,k](1/((2*n-1)*(2*n))) where P is the inverse P-transform, for n>=0 and 0<=k<=n.at n=22A269943
• Multi-table menage seating arrangements: T(n,k) for n,k >= 1 equals the number of ways to seat n*k married couples at n round tables with 2*k seats each, such that (i) the gender of persons alternates around each table; and (ii) spouses do not sit next to each other.at n=7A277257
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 133", based on the 5-celled von Neumann neighborhood.at n=20A279140
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 155", based on the 5-celled von Neumann neighborhood.at n=18A286115
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 324", based on the 5-celled von Neumann neighborhood.at n=18A287633
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 326", based on the 5-celled von Neumann neighborhood.at n=44A287712
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 326", based on the 5-celled von Neumann neighborhood.at n=45A287712
• Numbers n such that phi(n) * tau(n) divides n^2, but neither tau(n) nor phi(n) divides n.at n=25A287800