100442349

Appears in sequences

• a(n) = 7*3^n.at n=15A005032
• Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*9^j.at n=30A038299
• Next-to-last diagonal of A024462.at n=16A038765
• Smallest lucky number that is the product of n lucky numbers.at n=15A064703
• Coefficient of the highest power of q in the expansion of nu(0)=1, nu(1)=b and for n >= 2, nu(n) = b*nu(n-1) + lambda*(n-1)_q*nu(n-2) with (b,lambda)=(2,3), where (n)_q = (1+q+...+q^(n-1)) and q is a root of unity.at n=32A072985
• a(n) = (7*3^n - 4*0^n)/3.at n=16A082541
• Expansion of (1-3*x+12*x^2)/((1-3*x)*(1+3*x)).at n=16A091103
• a(n) = 3*a(n-1) for n>2; a(0)=1, a(1)=3, a(2)=7.at n=17A141495
• a(n) = 3*a(n-2) for n > 2; a(1) = 1; a(2) = 7.at n=31A166481
• Number of semicomplete digraphs on n nodes with an "Emperor".at n=7A219116
• a(n+2) = 3*a(n), starting 4,7.at n=31A228879