A135476 Positive numbers of the form 6^x-y^2 with repetition.

1, 2, 5, 6, 11, 20, 20, 27, 32, 32, 35, 36, 47, 71, 72, 95, 116, 135, 140, 152, 167, 180, 191, 200, 207, 207, 207, 212, 215, 216, 272, 335, 380, 396, 455, 512, 551, 567, 620, 671, 720, 720, 767, 812, 855, 887, 896, 935, 972, 1007, 1040, 1052, 1071, 1100, 1127