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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 37 |
| 3 | 99 |
| 4 | 213 |
| 5 | 401 |
| 6 | 657 |
| 7 | 1085 |
| 8 | 1619 |
| 9 | 2327 |
| 10 | 3257 |
| 11 | 4457 |
| 12 | 5883 |
| 13 | 7751 |
| 14 | 9885 |
| 15 | 12403 |
| 16 | 15513 |
| 17 | 19131 |
| 18 | 23181 |
| 19 | 28115 |
| 20 | 33601 |
| 21 | 39745 |
| 22 | 46821 |
| 23 | 54865 |
| 24 | 63733 |
| 25 | 73879 |
| 26 | 84889 |
| 27 | 97063 |
| 28 | 110639 |
| 29 | 125649 |
| 30 | 141797 |
| 31 | 160129 |
| 32 | 179981 |
| 33 | 201175 |
| 34 | 224481 |
| 35 | 249403 |
| 36 | 276291 |
| 37 | 306003 |
| 38 | 337425 |
[13,37,99,213,401,657,1085,1619,2327,3257,4457, 5883,7751,9885,12403,15513,19131,23181,28115, 33601,39745,46821,54865,63733,73879,84889,97063, 110639,125649,141797,160129,179981,201175,224481, 249403,276291,306003,337425] |