179105

Appears in sequences

• Smallest number k such that M(n)^2-k*M(n)-1 is prime with M(n) = Mersenne primes = A000668(n).at n=27A139424
• Number of nX3 0..3 arrays with no more than floor(nX3/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order.at n=8A222474