42911

Appears in sequences

• Number of ways of dividing n labeled items into labeled boxes with an equal number of items in each box.at n=7A061095
• Smallest k>n such that n^3+1 divides k*n^2+1.at n=35A071568
• Smallest k such that the number k^n in its decimal representation has a prime number of copies of the digit d for each d from 0 through 9.at n=31A217051
• Number of third differences of arrays of length 5 of numbers in 0..n.at n=34A228261
• Products of three distinct primes that form an arithmetic progression.at n=33A262723
• Numbers x that are equal to lpf(x)*gpf(x)*(lpf(x)+gpf(x))/2, where lpf(x) < gpf(x) are the least and the greatest prime factors of x: A020639 and A006530.at n=39A307108
• Sum T(n,k) of multinomials M(n; lambda), where lambda ranges over all partitions of n into parts that form a set of size k; triangle T(n,k), n>=0, 0<=k<=A003056(n), read by rows.at n=23A327803