20893

Appears in sequences

• From Apery continued fraction for zeta(3): zeta(3)=6/(5-1^6/(117-2^6/(535-3^6/(1463...)))).at n=8A006221
• a(n) is the least k > 0 such that k and 3k are anagrams in base n (written in base 10).at n=14A023095
• Sums of distinct powers of 12.at n=23A033048
• Expansion of f(-x^3)^3 / (f(-x^2) * f(-x^4)^2) in powers of x where f() is a Ramanujan theta function.at n=46A262150
• a(n) = 164*2^n - 99.at n=7A305157
• Squarefree semiprimes k such that k+1 is the product of three distinct primes and k+2 is the product of four distinct primes.at n=25A376352