89984

Appears in sequences

• arcsinh(arcsin(arctan(x)))=x-2/3!*x^3+32/5!*x^5-1224/7!*x^7+89984/9!*x^9...at n=4A012093
• Difference between the largest and the smallest n-digit prime.at n=4A073862
• E.g.f. satisfies: A(x) = 1 + tan(x*A(x)).at n=7A201128
• Number of regions in a polygon whose boundary consists of n+2 equally spaced points around a semicircle and three equally spaced points along the diameter (a total of n+3 points). See Comments for precise definition.at n=36A333642
• Numbers whose prime indices and prime signature have the same mean.at n=39A359903
• a(0) = 1, a(n) = result of eliminating the digit 7 from the sum of all previous terms for n>=1.at n=23A370254