85440

Appears in sequences

• Number of 3 X n binary matrices up to row and column permutations.at n=18A002727
• a(n) = 4*n*(n^2 + 2)/3.at n=40A217873
• Numbers k such that k' = concat(s,t) and k = s*t, where k' is the arithmetic derivative of k.at n=5A272780
• Positive integers equal to the permanent of Hankel matrix formed by their decimal digits.at n=13A308126
• Sum of the odd parts in the partitions of n into 6 parts.at n=46A309550
• a(n) = Sum_{k = 0..n} (-1)^(n+k)*k*binomial(n,k)*binomial(n+k,k)^2.at n=5A357558