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A118547 Squares which are divisible by the sum of their digits. 1

%I

%S 1,4,9,36,81,100,144,225,324,400,441,576,900,1296,1521,1764,2025,2304,

%T 2401,2601,2704,2916,3600,3969,4225,4356,4624,5184,6084,6400,7056,

%U 7744,8100,9216,10000,10404,10816,11025,11664,12100,12321,12544,13689,14400

%N Squares which are divisible by the sum of their digits.

%C Intersection of A000290 and A005349. - _Michel Marcus_, Feb 27 2014

%e 576 is in the sequence because (1) it is a square, (2) the sum of its digits is 5+7+6=18 and (3) 576 is divisible by 18.

%o (PARI) isok(n) = issquare(n) && !(n % sumdigits(n)); \\ _Michel Marcus_, Feb 27 2014

%Y Cf. A000290, A005349.

%K base,nonn

%O 1,2

%A Luc Stevens (lms022(AT)yahoo.com), May 03 2006

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Last modified August 21 08:47 EDT 2019. Contains 326162 sequences. (Running on oeis4.)