380689
domain: N
Appears in sequences
- "BGJ" (reversible, element, labeled) transform of 1,1,1,1...at n=11A032049
- Perfect squares using only the curved digits 0, 3, 6, 8 and 9.at n=16A079655
- Squares of A006450: a(n) = prime(prime(n))^2.at n=29A092769
- Squares of lesser of twin primes.at n=27A108570
- Numbers n for which the absolute value of the abundance of both n and n^2 is a prime number.at n=33A125237
- Squares s such that s + 1234567890 is prime.at n=20A241538
- Perfect powers m^k such that m, k and m+k are primes.at n=31A258400
- Composite numbers k such that tau(k^(k-1)) is a prime.at n=45A283549
- a(n) = (T(n,n+1) - 1)/n^3 for n >= 1, where T(n,x) is the n-th Chebyshev polynomial of the first kind.at n=6A370259