

A316481


Squares whose arithmetic mean of digits is 1 (i.e., the sum of digits equals the number of digits).


2



1, 1100401, 2220100, 100040004, 100100025, 100220121, 100400400, 101002500, 102030201, 102212100, 103002201, 104040000, 110250000, 121022001, 121220100, 123210000, 132020100, 144000000, 210221001, 225000000, 310112100, 324000000, 400040001, 400400100
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OFFSET

1,2


COMMENTS

Each term's number of digits is in A056991 (Numbers with digital root 1, 4, 7, or 9). For every term k in A056991, this sequence contains at least one kdigit term, with the exception of k=4. (See A316480.)


LINKS



EXAMPLE

1049^2 = 1100401, a 7digit number whose digit sum is 1+1+0+0+4+0+1 = 7, so 1100401 is a term.


CROSSREFS



KEYWORD

nonn,base


AUTHOR



STATUS

approved



