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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 41 |
| 3 | 156 |
| 4 | 426 |
| 5 | 951 |
| 6 | 1856 |
| 7 | 3291 |
| 8 | 5431 |
| 9 | 8476 |
| 10 | 12651 |
| 11 | 18206 |
| 12 | 25416 |
| 13 | 34581 |
| 14 | 46026 |
| 15 | 60101 |
| 16 | 77181 |
| 17 | 97666 |
| 18 | 121981 |
| 19 | 150576 |
| 20 | 183926 |
| 21 | 222531 |
| 22 | 266916 |
| 23 | 317631 |
| 24 | 375251 |
| 25 | 440376 |
| 26 | 513631 |
| 27 | 595666 |
| 28 | 687156 |
| 29 | 788801 |
| 30 | 901326 |
| 31 | 1025481 |
| 32 | 1162041 |
| 33 | 1311806 |
| 34 | 1475601 |
| 35 | 1654276 |
| 36 | 1848706 |
| 37 | 2059791 |
| 38 | 2288456 |
| 39 | 2535651 |
[1,6,41,156,426,951,1856,3291,5431,8476,12651, 18206,25416,34581,46026,60101,77181,97666,121981, 150576,183926,222531,266916,317631,375251,440376, 513631,595666,687156,788801,901326,1025481, 1162041,1311806,1475601,1654276,1848706,2059791, 2288456,2535651] |