1983558

Appears in sequences

• Triangle read by rows: number of nonisomorphic semigroups of order n with k idempotents.at n=32A058108
• Expansion of b(2)*b(6)*b(10)/(1 - x - x^2 - x^4 - x^5 + x^11 + x^12 + x^14), where b(k) = (1-x^k)/(1-x).at n=22A266354