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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 10 |
| 3 | 33 |
| 4 | 68 |
| 5 | 123 |
| 6 | 226 |
| 7 | 342 |
| 8 | 547 |
| 9 | 778 |
| 10 | 1071 |
| 11 | 1412 |
| 12 | 1901 |
| 13 | 2392 |
| 14 | 2997 |
| 15 | 3762 |
| 16 | 4391 |
| 17 | 5534 |
| 18 | 6645 |
| 19 | 7632 |
| 20 | 9045 |
| 21 | 10546 |
| 22 | 11983 |
| 23 | 13870 |
| 24 | 16011 |
| 25 | 17672 |
| 26 | 20107 |
| 27 | 22986 |
| 28 | 25297 |
| 29 | 28100 |
| 30 | 31223 |
| 31 | 34468 |
| 32 | 38215 |
| 33 | 42194 |
| 34 | 45419 |
| 35 | 50134 |
| 36 | 54671 |
| 37 | 59154 |
| 38 | 64431 |
| 39 | 70022 |
[1,4,10,33,68,123,226,342,547,778,1071,1412,1901, 2392,2997,3762,4391,5534,6645,7632,9045,10546, 11983,13870,16011,17672,20107,22986,25297,28100, 31223,34468,38215,42194,45419,50134,54671,59154, 64431,70022] |