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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 17 |
| 4 | 20 |
| 5 | 65 |
| 6 | 68 |
| 7 | 273 |
| 8 | 276 |
| 9 | 321 |
| 10 | 324 |
| 11 | 1041 |
| 12 | 1044 |
| 13 | 1089 |
| 14 | 1092 |
| 15 | 4369 |
| 16 | 4372 |
| 17 | 4417 |
| 18 | 4420 |
| 19 | 5137 |
| 20 | 5140 |
| 21 | 5185 |
| 22 | 5188 |
| 23 | 16657 |
| 24 | 16660 |
| 25 | 16705 |
| 26 | 16708 |
| 27 | 17425 |
| 28 | 17428 |
| 29 | 17473 |
| 30 | 17476 |
| 31 | 69905 |
| 32 | 69908 |
| 33 | 69953 |
| 34 | 69956 |
| 35 | 70673 |
| 36 | 70676 |
| 37 | 70721 |
[1,4,17,20,65,68,273,276,321,324,1041,1044,1089, 1092,4369,4372,4417,4420,5137,5140,5185,5188, 16657,16660,16705,16708,17425,17428,17473,17476, 69905,69908,69953,69956,70673,70676,70721] |