OFFSET
1,1
COMMENTS
If m is a member of the sequence consisting of k base-10 digits, every member of the sequence greater than m is congruent to m modulo 10^k.
EXAMPLE
a(4)=81936 because the squares of the digits of a(3)--namely, 9, 3 and 6--are 81, 9 and 36 respectively.
MATHEMATICA
NestList[FromDigits[Flatten[IntegerDigits/@(IntegerDigits[#]^2)]]&, 6, 10] (* Harvey P. Dale, Feb 28 2013 *)
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Matthew Vandermast, Apr 01 2003
STATUS
approved