Many excellent designs for a new banner were submitted. We will use the best of them in rotation.
1,2
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.
Cf. A085936.
Sequence in context: A053936 A172801 A235680 * A142890 A201183 A103404
Adjacent sequences: A085934 A085935 A085936 * A085938 A085939 A085940
base,easy,nonn
Jason Earls and Amarnath Murthy, Jul 14 2003
approved