10628820

Appears in sequences

• Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*9^j.at n=24A038299
• 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=44A069188
• a(n) = 3*a(n-1), with a(1) = 20.at n=12A116530
• Number of isolated 0's in all ternary words of length n on {0,1,2}.at n=13A120926