1732104

Appears in sequences

• Expansion of 1/(1-3*x)^6; 6-fold convolution of A000244 (powers of 3).at n=7A036219
• Look at all numbers formed by multiplying the parts in a partition of n; a(n) = maximal such number which is divisible by n.at n=43A069188
• a(n) = (n+1)*(n+6)*3^n/6.at n=10A080420
• Numbers k such that rad(k)^2 divides sigma(k).at n=30A173615