274877906944
domain: N
Appears in sequences
- Powers of 4: a(n) = 4^n.at n=19A000302
- Successive numerators of Wallis's approximation to Pi/2 (reduced).at n=22A001901
- 19th powers: a(n) = n^19.at n=4A010807
- a(n) = 4^(2*n+1).at n=9A013709
- a(n) = 2^(3*n+2).at n=12A013731
- a(n) = 4^(3*n+1).at n=6A013734
- a(n) = 4^(4*n + 3).at n=4A013781
- a(n) = 2^(5*n + 3).at n=7A013824
- a(n) = 4^(5*n + 4).at n=3A013833
- Denominator of sum of -19th powers of divisors of n.at n=3A017702
- Earliest sequence where a(a(n))=4^n.at n=19A038757
- a(n) = denominator of binomial(2n,n)/4^n.at n=20A046161
- a(n) is the first (and maximal) power of 2 arising during iterations of the Euler phi function with initial value n!.at n=19A053047
- When the Euler phi function is iterated with initial value primorial(n) = A002110(n), a(n)= first (maximum) power of 2 emerging during iteration.at n=14A053098
- Smallest number whose Euler totient is divisible by 2^n.at n=37A053576
- Denominators of (reduced) coefficients of Laurent series for conformal mapping from exterior of unit disk onto exterior of Mandelbrot set.at n=19A054671
- a(n) = 4^A005187(n). The denominators of the Landau constants.at n=11A056982
- Minimal number of disjoint edge-paths into which the graph of the n-ary cube can be partitioned.at n=38A059222
- Denominator of probability that there is no error when average of n numbers is computed, assuming errors of +1, -1 are possible and they each occur with p=1/4.at n=10A061549
- Denominators of coefficients in series expansion of -512*(1+x)^3/(x-8)^3.at n=14A066415