4718591

Appears in sequences

• Woodall (or Riesel) numbers: n*2^n - 1.at n=17A003261
• Expansion of (1+x^2-x^3)/((1-x)*(1-2*x)).at n=21A052996
• a(1) = 2, a(n+1) = smallest squarefree number == 1 (mod a(n)) and > a(n).at n=22A076698
• Woodall semiprimes: Semiprimes of the form n*2^n - 1.at n=6A242115
• Record values in A135141.at n=41A246347
• 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 237", based on the 5-celled von Neumann neighborhood.at n=37A287080