a(n) = (12*n)!*(3*n)!/((6*n)!*(5*n)!*(4*n)!).A295435a(n) = (12*n)!*(3*n)!/((6*n)!*(5*n)!*(4*n)!).Terms a(0) =1a(1) =1386a(2) =6374082a(3) =33660501840External referencesoeis: A295435