73456

Appears in sequences

• G.f.: A(x) = (1 + 21*x + 3*x^2 - x^3)/(1-x)^5.at n=15A183066
• T(n,k)=Number of nXk 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to exactly one horizontal or vertical neighbor.at n=69A199261
• T(n,k)=Number of nXk 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to exactly one horizontal or vertical neighbor.at n=74A199261
• Number of ways to choose a set partition of a strict integer partition of n.at n=37A294617