101305

Appears in sequences

• a(n) = 74*n^2 - 1.at n=36A158744
• Number of (n+1)X5 0..3 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.at n=6A186477
• Number of (n+1)X8 0..3 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.at n=3A186480
• Bases b where exactly nine primes p with p < b exist such that p is a base-b Wieferich prime.at n=15A325885
• Dirichlet g.f.: zeta(s-3)^2 * (1 - 2^(4-s)) / zeta(s).at n=36A369101
• a(n) = Sum_{1 <= x_1, x_2, x_3 <= n} gcd(x_1, x_2, x_3, n)^3.at n=36A372928