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A108406 Numbers n such that concatenating n and the sum of the digits of n raised to their own power (A045503) produces a square. 0

%I

%S 0,211,220,235,20403,111416,1011231,3444142,10003400,22303600,

%T 31151021,53231032,121542025,126423126,202032110,243425212,302434003,

%U 311544033,324231521,334130241,375607602,406221650,561620561,662033363,1053045074

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

%e 235 is a term because 2^2 + 3^3 + 5^5 = 3156 and 2353156 = 1534^2.

%Y Cf. A108302.

%K base,nonn

%O 1,2

%A _Jason Earls_, Jul 04 2005

%E More terms from _Ryan Propper_, Jul 07 2005

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Last modified January 20 03:25 EST 2022. Contains 350467 sequences. (Running on oeis4.)