217412

Appears in sequences

• a(n)=12*sum(1<=i<=j<=k<=n,i*j/k).at n=26A088941
• Number of n X 6 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 1 1 vertically.at n=17A208778