5904900

Appears in sequences

• Numbers of form 9^i*10^j, with i, j >= 0.at n=30A025635
• a(n) = n^2*3^n.at n=10A127960
• a(n) = (n^3 - n^2)*9^n.at n=4A128992
• Totally multiplicative sequence with a(p) = 9*(p+3) for prime p.at n=35A167328
• Expansion of (1 - 2*x + 5*x^2) / (1 - 3*x)^2.at n=12A167682
• Number of (n+2)X(2+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum less than the central column sum.at n=12A258888
• Powers k^m, m > 1, where k is neither squarefree nor squareful, and has a primorial kernel but is not a product of primorials.at n=32A389682