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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 8 |
| 5 | 19 |
| 6 | 20 |
| 7 | 48 |
| 8 | 49 |
| 9 | 118 |
| 10 | 119 |
| 11 | 287 |
| 12 | 288 |
| 13 | 695 |
| 14 | 696 |
| 15 | 1680 |
| 16 | 1681 |
| 17 | 4058 |
| 18 | 4059 |
| 19 | 9799 |
| 20 | 9800 |
| 21 | 23659 |
| 22 | 23660 |
| 23 | 57120 |
| 24 | 57121 |
| 25 | 137902 |
| 26 | 137903 |
| 27 | 332927 |
| 28 | 332928 |
| 29 | 803759 |
| 30 | 803760 |
| 31 | 1940448 |
| 32 | 1940449 |
| 33 | 4684658 |
| 34 | 4684659 |
| 35 | 11309767 |
| 36 | 11309768 |
| 37 | 27304195 |
| 38 | 27304196 |
[1,2,3,7,8,19,20,48,49,118,119,287,288,695,696, 1680,1681,4058,4059,9799,9800,23659,23660,57120, 57121,137902,137903,332927,332928,803759,803760, 1940448,1940449,4684658,4684659,11309767,11309768, 27304195,27304196] |