106281

Appears in sequences

• a(n) = (n^4 + 2*n^3 - n^2)/2.at n=21A255499
• Number T(n,k) of colored integer partitions of n using all colors of a k-set such that each block of part i with multiplicity j has a pattern of i*j distinct colors in increasing order; triangle T(n,k), n>=0, A185283(n)<=k<=n, read by rows.at n=35A326616