68719476736
domain: N
Appears in sequences
- Powers of 4: a(n) = 4^n.at n=18A000302
- Ninth powers: a(n) = n^9.at n=16A001017
- Powers of 8: a(n) = 8^n.at n=12A001018
- Powers of 16: a(n) = 16^n.at n=9A001025
- Successive numerators of Wallis's approximation to Pi/2 (reduced).at n=20A001901
- a(n) = 2^(n^2).at n=6A002416
- Smallest number with exactly n divisors.at n=36A005179
- a(n) = 2^(n*(n-1)/2).at n=9A006125
- 12th powers: a(n) = n^12.at n=8A008456
- a(n) = n^(n+4).at n=8A008790
- 18th powers: a(n) = n^18.at n=4A010806
- a(n) = 16^(2*n + 1).at n=4A013721
- a(n) = 16^(4*n+1).at n=2A013804
- a(n) = 2^(5*n + 1).at n=7A013822
- a(n) = 4^(5*n + 3).at n=3A013832
- a(n) = 8^(5*n + 2).at n=2A013847
- 16^(5*n+4).at n=1A013881
- Smallest k such that 1/k can be written as a sum of exactly 2 unit fractions in n ways.at n=36A016017
- Least k such that (tau(k^3)+2)/3=n.at n=36A016018
- a(n) = (2*n)^9.at n=8A016749