2217600

Appears in sequences

• a(1)=1; a(n) = n!*Fibonacci(n+2), n > 1.at n=7A005922
• Decomposition of Stirling's S(n,2) based on associated numeric partitions.at n=27A058936
• Triangle of nonzero coefficients of Hermite polynomials H_n(x) in increasing powers of x.at n=37A059343
• Number of degree-n permutations of order exactly 9.at n=10A061123
• a(n) = n!*2^(n-1)/Product_{k=1..n} tau(k) where tau = A000005.at n=10A074740
• Product of the smallest prime divisors of composite numbers between successive primes.at n=29A076976
• Number of symmetric ways to lace a shoe that has n pairs of eyelets such that each eyelet has at least one direct connection to the opposite side.at n=8A078700
• Triangle read by rows. First in a series of triangular arrays counting permutations of partitions.at n=57A092271
• a(n) is the minimal product of the smallest prime factor of each composite number in a prime gap of 2n.at n=6A096317
• Triangle T(n,k), 0 <= k <= n, defined by T(n,k) = 2^k*A001497(n,k).at n=31A109767
• a(n) = number of elements of order n in simple group Alt(11) of order 19958400.at n=8A145822
• Triangle read by rows: T(n,k) is the number of derangements of {1,2,...,n} having k cycles of length 2 (0 <= k <= floor(n/2)).at n=45A162974
• Triangular array read by rows: T(n,k) is the number of n-permutations that are pure cycles having exactly k fixed points; n>=2, 0<=k<=n-2.at n=47A211603
• a(n) = (-1)^n*(n+3)!/(2*(n+1)) for n >= 0.at n=8A238474
• Smallest number k such that the symmetric representation of sigma(k) has at least one part of width n.at n=27A250070
• Highly composite numbers of class 6 (see comment in A275239).at n=37A275244
• Maximal coefficient in Hermite polynomial of order n.at n=11A277280
• Maximal coefficient (ignoring signs) in Hermite polynomial of order n.at n=11A277281
• Positions of records in A220400.at n=33A297160
• T(n, k) = (m*n)!/(k!*(n-k)!)^m with m = 3; triangle read by rows, 0 <= k <= n.at n=11A320824