Numbers k with the property that there exist nonnegative integers a and b such that k = concat(a,b) = a^2+b^2.

A178530

Numbers k with the property that there exist nonnegative integers a and b such that k = concat(a,b) = a^2+b^2.

Terms

    a(0) =0a(1) =1a(2) =100a(3) =101a(4) =1233a(5) =8833a(6) =10100a(7) =990100a(8) =5882353a(9) =94122353a(10) =1765038125a(11) =2584043776a(12) =7416043776a(13) =8235038125a(14) =116788321168a(15) =123288328768a(16) =876712328768a(17) =883212321168

External references