274876858369
domain: N
Appears in sequences
- a(n) = (2^n - 1)^2.at n=18A060867
- Smallest square which is one more than the product of n (not necessarily distinct) numbers > 1.at n=24A081949
- Smallest square which is one more than the product of n (not necessarily distinct) numbers > 1.at n=25A081949
- Smallest square k == 1 (mod some n-th power), k > 1.at n=19A088037
- Squares of Mersenne primes A000668(n).at n=6A133049
- a(n) = 1+4^(n+1)-4*(-2)^n.at n=18A171590
- (2^p-1)^2 where p is prime.at n=7A174744
- Prime powers p (A025475) such that the sum of the proper divisors of p is also a prime power.at n=7A228018
- Product of lowest and highest prime factors of 2^n-1.at n=17A249780