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Table of n, a(n) for n=1..27.
212 belongs to this sequence because 212 sorted is 122 and the sum of the squares of the digits of 122 = 1^2 + 2^2 + 2^2= 9 and 122 + 9 = 131, a palindrome.
Sequence in context: A252765 A172801 A235680 * A142890 A201183 A103404
Adjacent sequences: A085934 A085935 A085936 * A085938 A085939 A085940
Jason Earls and Amarnath Murthy, Jul 14 2003