Numbers k for which nonnegative integers x and y exist such that k is the concatenation of x and y as well as k = (x + y)^2.
A380428
Numbers k for which nonnegative integers x and y exist such that k is the concatenation of x and y as well as k = (x + y)^2.
Terms
- a(0) =81a(1) =100a(2) =2025a(3) =3025a(4) =88209a(5) =494209a(6) =4941729a(7) =7441984a(8) =24502500a(9) =25502500a(10) =52881984a(11) =60481729a(12) =300814336a(13) =493817284a(14) =6049417284a(15) =6832014336a(16) =20408122449a(17) =21948126201a(18) =33058148761a(19) =35010152100a(20) =43470165025a(21) =101558217124a(22) =108878221089a(23) =123448227904a(24) =127194229449a(25) =152344237969
External references
- oeis: A380428