[seqfan] Re: Sharing no digit business (with building process)

[David Wilson]

So a(n) = smallest unseen positive integer sharing no digit with n?

2 1 4 3 6 5 8 7 10 9 20 30 22 23 24 25 26 27 28 11 33 13 14 15 16 17
18 19 31 12 29 40 21 50 41 42 44 45 46 32 35 36 51 37 38 39 52 53 55 34
43 47 48 60 49 70 61 62 63 54 57 58 59 71 72 73 80 74 75 56 64 65 66 68
69 81 82 90 83 67 76 77 79 91 92 93 94 95 100 78 84 85 86 87 88 101 102
103 104 89 96 97 98 99 222 223 224 225 226 227 200 300 202 203 204 205
206 207 208 333 303 304 400 305 306 307 308 309 330 228 209 404 220 229
240 242 244 245 246 232 230 335 250 233 236 235 238 237 252 234 239 334
247 260 243 248 249 262 263 253 254 337 255 257 270 258 259 272 273 256
264 336 265 266 268 280 269 290 282 267 274 339 275 276 277 279 292 293
302 278 283 338 284 285 286 287 288 320 322 111

This sequence of course finite ending at n = 123456788.