110122

Appears in sequences

• a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n+1-k), where k = floor((n+1)/2), s = (natural numbers >= 3), t = A023532.at n=18A024314
• Ternary emirpimes.at n=33A119684
• Number of n X 1 0..5 arrays with values 0..5 introduced in row major order and each element equal to at least one horizontal or vertical neighbor.at n=17A198620