14171760

Appears in sequences

• Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*12^j.at n=23A038302
• Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*9^j.at n=25A038335
• a(n) = (n^3 - n)*3^n.at n=8A128961