383161
domain: N
Appears in sequences
- Smallest nontrivial extension of n-th palindromic prime which is a square.at n=13A030681
- Powers of a prime lucky number (A031157) but excluding lucky numbers (A000959).at n=36A057609
- Numbers k such that sigma_4(k)/sigma_2(k) is prime.at n=29A066109
- Squares of the form prime(k)*prime(k+1) + 2*prime(k+1).at n=27A108604
- Nonprime numbers k such that k divides 3^((k+1)/2) - 2^((k+1)/2) - 1.at n=28A130062
- Composite numbers k such that tau(k^(k-1)) is a prime.at n=46A283549
- Number of vertices formed in a square by straight line segments when connecting the n+1 points along each edge that divide it into n equal parts to the n+1 points on the edge on the opposite side of the square.at n=22A355839