Cyclic Difference Set (400, 57, 8)

Singer difference set

0 1 2 4 14 19 20 31 35 38 42 47 48 64 66 73 80 94 103 105 114 128 162 164 167 168 177 186 189 199 206 214 222 226 243 257 259 264 265 279 283 291 308 311 313 314 321 324 332 334 360 364 375 387 390 395 396