Numbers k such that concatenating k and the sum of the digits of k raised to their own power (A045503) produces a square.

A108406

Numbers k such that concatenating k and the sum of the digits of k raised to their own power (A045503) produces a square.

Terms

    a(0) =0a(1) =211a(2) =220a(3) =235a(4) =20403a(5) =111416a(6) =1011231a(7) =3444142a(8) =10003400a(9) =22303600a(10) =31151021a(11) =53231032a(12) =121542025a(13) =126423126a(14) =202032110a(15) =243425212a(16) =302434003a(17) =311544033a(18) =324231521a(19) =334130241a(20) =375607602a(21) =406221650a(22) =561620561a(23) =662033363a(24) =1053045074

External references