269907

Appears in sequences

• sin(sin(x)-tan(x))=-3/3!*x^3-15/5!*x^5-273/7!*x^7-375/9!*x^9...at n=4A013352
• Expansion of Product_{k>=1} (1 - x^k)^(k*(k+1)*(2*k+1)/6).at n=19A319757