63772920

Appears in sequences

• Expansion of (-1+1/(1-3*x)^3)/(9*x).at n=13A036068
• Number of n X 4 0..4 arrays with no element equal to another at a city block distance of exactly two, and new values 0..4 introduced in row major order.at n=5A222942
• T(n,k) = Number of n X k 0..4 arrays with no element equal to another at a city block distance of exactly two, and new values 0..4 introduced in row major order.at n=39A222944
• T(n,k) = Number of n X k 0..4 arrays with no element equal to another at a city block distance of exactly two, and new values 0..4 introduced in row major order.at n=41A222944
• a(n) = [x^n] Product_{k>=1} (1 + n^(k-1)*x^k).at n=9A340103
• Expansion of Product_{k>=1} (1 + 9^(k-1)*x^k).at n=9A344068