106710

Appears in sequences

• Integers n such that 6n, 36n, and 216n fall between pairs of twin primes, that is, 6n-1, 6n+1, 36n-1, 36n+1, 216n-1, and 216n+1 are prime.at n=26A192851
• Triangle read by rows: T(n,k) (n >= 5, 4 <= k <= n-1) = number of lattice 3-polytopes of width larger than 1, size n, and k vertices.at n=30A319958
• a(n) = floor(a(n-1)*3/2) with a(1) = 5.at n=25A381677