525312

Appears in sequences

• Numbers that are the sum of 4 positive 9th powers.at n=27A003393
• Number of types of Boolean functions of n variables under a certain group.at n=9A028403
• Define the array k(n,x) = number of m such that tau(gcd(n,m)) is x where m runs from 1 to n. Also define h(n,x) = Sum_{d|n : tau(d) = x} d. The sequence contains numbers n such that k(n,x)*x = h(n,x) has at least one solution x.at n=26A197099
• Permanent of the n-th principal submatrix of A204435.at n=11A204436
• Number of length n+2 0..1 arrays with the sum of the maximum minus twice the median plus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero.at n=17A251421
• Number of length n+2 0..1 arrays with the sum of medians of adjacent triples multiplied by some arrangement of +-1 equal to zero.at n=17A253122
• Number of set partitions of [n] such that the difference between each element and its index (in the partition) is a multiple of nine.at n=20A274866
• a(n) is the number of permutations pi on n letters such that pi(i) != i (mod 3) for all i.at n=11A340900
• Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k grid up to horizontal and vertical reflections by a tile that is fixed under horizontal reflection only.at n=42A368218
• a(n) = Sum_{k=0..n} k^6 * (-1)^k * 3^(n-k) * binomial(n,k).at n=9A383155