Squares arising as a concatenation of k and 9's complement of k.
A084006
Squares arising as a concatenation of k and 9's complement of k.
Terms
- a(0) =36a(1) =81a(2) =1089a(3) =4356a(4) =9801a(5) =110889a(6) =443556a(7) =998001a(8) =11108889a(9) =44435556a(10) =99980001a(11) =1111088889a(12) =4444355556a(13) =9999800001a(14) =111110888889a(15) =444443555556a(16) =999998000001
External references
- oeis: A084006