[seqfan] Palindromes -- with digits

[Eric Angelini]

Hello SeqFans,
--- a(1)=0
--- The sum of two neighboring digits of S is a palindrome
--- S is always extended with the smallest unused integer so far :

S=1,2,3,4,5,6,10,7,11,8,12,9,20,14,15,16,17,18,30,21,22,23,24,25,26,27,29,200,31,...

S has this flavor: http://oeis.org/A228730
Best,
É.