421888

Appears in sequences

• Nim product 2^n * 2^n.at n=18A006017
• Number of 3 X n binary matrices avoiding simultaneously the right angled numbered polyomino patterns (ranpp) (10;0) and (01;1).at n=12A100312
• Expansion of (1-2*x)/(1-2*x+2*x^3).at n=31A124395
• Numbers with 26 divisors.at n=25A137489
• Binomial transform of A008805 (triangular numbers with repeats).at n=15A158920
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 390", based on the 5-celled von Neumann neighborhood.at n=18A287982