525298

Appears in sequences

• Let M(n) be the n X n matrix m(i,j)=min(i,j) for 1<=i,j<=n then a(n) is the trace of M(n)^(-9).at n=12A114361
• a(n) = 3*3^n - 3*2^n + 1.at n=10A126644
• The number of ways of partitioning the multiset {1,1,2,3,...,n-1} into exactly three nonempty parts.at n=11A168583