161229

Appears in sequences

• Number of compositions of n such that every part divides the largest part.at n=21A130708
• Array read by downward antidiagonals: A(n,k) = A(n-1,k+1) + 2*(k+1)!*Sum_{j=0..k} A(n-1,j)/j! with A(0,k) = 1, n >= 0, k >= 0.at n=26A379458