124363

Properties

Appears in sequences

• Number of brilliant numbers < 10^n.at n=6A086846
• Number of nX6 0..3 arrays with exactly floor(nX6/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.at n=1A222745
• T(n,k)=Number of nXk 0..3 arrays with exactly floor(nXk/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.at n=22A222747
• Number of 2Xn 0..3 arrays with exactly floor(2Xn/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.at n=5A222749
• Expansion of e.g.f. exp(Sum_{k>=1} phi(k)*x^k), where phi is the Euler totient function A000010.at n=7A318811
• Prime numbersat n=11683