18386775

Appears in sequences

• Odd numbers in the triangle of denominators in Leibniz's Harmonic Triangle.at n=46A046200
• Odd numbers in the triangle of denominators in Leibniz's Harmonic Triangle.at n=47A046200
• Distinct odd numbers in the triangle of denominators in Leibniz's Harmonic Triangle.at n=24A046201
• a(n) = (3*n+1)!/((2*n)! * n!).at n=8A090816