Numbers n such that sum of squares of n consecutive integers

the first 44 first numbers bellow 300

1, 2, B, 1X, 1B, 20, 33, 38, 3X, 3B, 47, 56, 57, 6X, 75, 76, 83, 94, 95, B3, 100, 108, 112, 119, 11B, 11J, 13X, 155, 157, 158, 162, 193, 19B, 1X0, 1XJ, 1B0, 1B1, 1JJ, 200, 209, 211, 21X, 21B, 22J, 236, 243, 254, 256, 272, 281, 292, 293, 2XB, 2XJ, 2B9, 2JJ