Numbers whose square is the concatenation of two identical numbers, i.e., of the form NN.
A106497
Numbers whose square is the concatenation of two identical numbers, i.e., of the form NN.
Terms
- a(0) =36363636364a(1) =45454545455a(2) =54545454546a(3) =63636363637a(4) =72727272728a(5) =81818181819a(6) =90909090910
External references
- oeis: A106497