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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 51 |
| 3 | 131 |
| 4 | 221 |
| 5 | 333 |
| 6 | 573 |
| 7 | 893 |
| 8 | 1093 |
| 9 | 1343 |
| 10 | 1903 |
| 11 | 2463 |
| 12 | 2863 |
| 13 | 3423 |
| 14 | 4223 |
| 15 | 5183 |
| 16 | 5913 |
| 17 | 6393 |
| 18 | 7633 |
| 19 | 9153 |
| 20 | 9905 |
| 21 | 11025 |
| 22 | 12865 |
| 23 | 14465 |
| 24 | 15665 |
| 25 | 16875 |
| 26 | 18875 |
| 27 | 21115 |
| 28 | 22715 |
| 29 | 24395 |
| 30 | 27115 |
| 31 | 30315 |
| 32 | 31795 |
| 33 | 33235 |
| 34 | 36915 |
| 35 | 39955 |
| 36 | 42205 |
| 37 | 45005 |
| 38 | 48285 |
[1,11,51,131,221,333,573,893,1093,1343,1903,2463, 2863,3423,4223,5183,5913,6393,7633,9153,9905, 11025,12865,14465,15665,16875,18875,21115,22715, 24395,27115,30315,31795,33235,36915,39955,42205, 45005,48285] |