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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 65 |
| 3 | 757 |
| 4 | 4225 |
| 5 | 16001 |
| 6 | 49205 |
| 7 | 119365 |
| 8 | 271489 |
| 9 | 554797 |
| 10 | 1040065 |
| 11 | 1783541 |
| 12 | 3198325 |
| 13 | 4850977 |
| 14 | 7758725 |
| 15 | 12112757 |
| 16 | 17392769 |
| 17 | 24211265 |
| 18 | 36061805 |
| 19 | 47162485 |
| 20 | 67604225 |
| 21 | 90359305 |
| 22 | 115930165 |
| 23 | 148291397 |
| 24 | 205517173 |
| 25 | 250266001 |
| 26 | 315313505 |
| 27 | 404686153 |
| 28 | 504317125 |
| 29 | 595481825 |
[1,65,757,4225,16001,49205,119365,271489,554797, 1040065,1783541,3198325,4850977,7758725,12112757, 17392769,24211265,36061805,47162485,67604225, 90359305,115930165,148291397,205517173,250266001, 315313505,404686153,504317125,595481825] |