33868800

Appears in sequences

• Amicable quadruples: the values of sigma corresponding to A036471-A036474.at n=16A116148
• Amicable quadruples: the values of sigma corresponding to A036471-A036474.at n=17A116148
• a(0) = 1, a(n) = n*a(n-1)*A014963(n).at n=8A180170
• Triangle read by rows: T(n,k) is the coefficient of x^(2*k) in the cycle polynomial of the complete bipartite graph K_{n,n}, 1 <= k <= n.at n=33A291909
• Triangle read by rows: T(n,k) (n >= 1, 4 <= k <= n+3) is the number of k-sequences of balls colored with at most n colors such that exactly four balls are the same color as some other ball in the sequence.at n=34A292999
• a(n) is the denominator of Sum_{k=1..n} 1 / (k*k!).at n=7A354401
• a(n) is the denominator of Sum_{k=1..n} (-1)^(k+1) / (k*k!).at n=7A354404
• Numbers whose divisors have a mean abundancy index that is larger than 3.at n=19A374779
• Triangle of denominators for rational convergents to Taylor series of 1/Gamma(x+1).at n=37A386676
• Triangle read by rows: T(n, k) = (n! / (n - k)!) * Product_{k=1..n} radical(k), where radical(n) is the product of distinct prime factors of n, cf. A007947.at n=41A387126
• A005117(k) - 1 such that A389412(k) is a record value.at n=11A387630