411115

Appears in sequences

• a(n) = 2^n - A143658(n).at n=20A101836
• Number T(n,k) of colored compositions of n using all colors of a k-set such that all parts have different color patterns and the patterns for parts i are sorted and have i colors (in arbitrary order); triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=33A327673