42947941

Properties

Appears in sequences

• a(0) = 1; a(n) = a(n-1) + Sum_{k=0..n-1} (1 + k) * binomial(k+2,3) * binomial(n-1,k) * a(k) * a(n-1-k).at n=6A386511
• Prime numbersat n=2601603