122028

Appears in sequences

• Product_{n>=1} 1/(1 - x^n)^a(n) = g.f. of A001147 (double factorial of odd numbers).at n=6A305868
• Product_{n>=1} (1 + x^n)^a(n) = g.f. of A001147 (double factorial of odd numbers).at n=6A305870
• Product_{n>=1} (1 + a(n)*x^n) = 1 + 1!!*x + 3!!*x^2 + 5!!*x^3 + 7!!*x^4 + ...at n=6A363254
• Product_{n>=1} 1 / (1 - a(n)*x^n) = 1 + 1!!*x + 3!!*x^2 + 5!!*x^3 + 7!!*x^4 + ...at n=6A363255