1048105

Appears in sequences

• Sequence S with the following properties: (i) a(1)=2; (ii) for n in S, a(n)=a(1)+a(2)+...+a(n-1); (iii) for n not in S, a(n)=the smallest number different from a(1), ..., a(n-1) not breaking property (ii).at n=34A121175
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 573", based on the 5-celled von Neumann neighborhood.at n=19A283082