Numbers n such that two applications of 'Reverse and Subtract' lead to n, whereas one application does not lead to n.
A072141
Numbers n such that two applications of 'Reverse and Subtract' lead to n, whereas one application does not lead to n.
Terms
- a(0) =2178a(1) =6534a(2) =21978a(3) =65934a(4) =219978a(5) =659934a(6) =2199978a(7) =6599934a(8) =21782178a(9) =21999978a(10) =65346534a(11) =65999934a(12) =217802178a(13) =219999978a(14) =653406534a(15) =659999934a(16) =2178002178a(17) =2197821978a(18) =2199999978a(19) =6534006534a(20) =6593465934a(21) =6599999934
External references
- oeis: A072141