A008920 Let j = | i - i_written_backwards |, k = j + j_written_backwards; then k is in this sequence.

0, 18, 99, 198, 261, 342, 423, 504, 585, 666, 747, 828, 1089, 1170, 1251, 1332, 1413, 1494, 1575, 1656, 1737, 1818, 1998, 2871, 3762, 4653, 5544, 6435, 7326, 8217, 9108, 9999, 10890, 10989, 11781, 12672, 13563, 14454, 15345, 16236