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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 4 |
| 5 | 7 |
| 6 | 9 |
| 7 | 15 |
| 8 | 19 |
| 9 | 24 |
| 10 | 31 |
| 11 | 39 |
| 12 | 49 |
| 13 | 63 |
| 14 | 79 |
| 15 | 99 |
| 16 | 124 |
| 17 | 127 |
| 18 | 159 |
| 19 | 199 |
| 20 | 249 |
| 21 | 255 |
| 22 | 319 |
| 23 | 399 |
| 24 | 499 |
| 25 | 511 |
| 26 | 624 |
| 27 | 639 |
| 28 | 799 |
| 29 | 999 |
| 30 | 1023 |
| 31 | 1249 |
| 32 | 1279 |
| 33 | 1599 |
| 34 | 1999 |
| 35 | 2047 |
| 36 | 2499 |
| 37 | 2559 |
| 38 | 3124 |
| 39 | 3199 |
| 40 | 3999 |
| 41 | 4095 |
| 42 | 4999 |
| 43 | 5119 |
| 44 | 6249 |
| 45 | 6399 |
| 46 | 7999 |
| 47 | 8191 |
| 48 | 9999 |
| 49 | 10239 |
[0,1,3,4,7,9,15,19,24,31,39,49,63,79,99,124,127, 159,199,249,255,319,399,499,511,624,639,799,999, 1023,1249,1279,1599,1999,2047,2499,2559,3124,3199, 3999,4095,4999,5119,6249,6399,7999,8191,9999, 10239] |