a(1)=1; a(n) is the smallest positive integer that cannot be obtained from the integers {0, 1, ..., n-1} using each number at most once and the operators +, -, *, /.

A060315

a(1)=1; a(n) is the smallest positive integer that cannot be obtained from the integers {0, 1, ..., n-1} using each number at most once and the operators +, -, *, /.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =10a(4) =29a(5) =76a(6) =284a(7) =1413a(8) =7187a(9) =38103a(10) =231051a(11) =1765186a(12) =10539427

External references