17179869184
domain: N
Appears in sequences
- a(n) = a(n-1)*a(n-2) with a(0) = 1, a(1) = 2; also a(n) = 2^Fibonacci(n).at n=9A000301
- Powers of 4: a(n) = 4^n.at n=17A000302
- a(n) = (n+2)*2^(n-1).at n=30A001792
- Successive numerators of Wallis's approximation to Pi/2 (reduced).at n=19A001901
- a(n) = n*4^(n-1).at n=16A002697
- 17th powers: a(n) = n^17.at n=4A010805
- a(n) = 4^(2*n+1).at n=8A013709
- a(n) = 2^(3*n+1).at n=11A013730
- a(n) = 4^(3*n+2).at n=5A013735
- a(n) = 4^(4*n + 1).at n=4A013780
- a(n) = 2^(5*n + 4).at n=6A013825
- a(n) = 4^(5n+2).at n=3A013831
- Least k such that (tau(k^3)+2)/3=n.at n=34A016018
- Least k such that (tau(k^4)+3)/4=n.at n=34A016020
- Least k such that (tau(k^k)+k-1)/k=n.at n=34A016025
- Denominator of sum of -17th powers of divisors of n.at n=3A017698
- Smallest power of 2 that begins with n.at n=16A018802
- a(n) = 2^A031142(n).at n=9A031156
- Earliest sequence where a(a(n))=4^n.at n=17A038757
- a(n) = denominator of binomial(2n,n)/4^n.at n=18A046161