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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 129 |
| 3 | 534 |
| 4 | 1510 |
| 5 | 3435 |
| 6 | 6783 |
| 7 | 12124 |
| 8 | 20124 |
| 9 | 31545 |
| 10 | 47245 |
| 11 | 68178 |
| 12 | 95394 |
| 13 | 130039 |
| 14 | 173355 |
| 15 | 226680 |
| 16 | 291448 |
| 17 | 369189 |
| 18 | 461529 |
| 19 | 570190 |
| 20 | 696990 |
| 21 | 843843 |
| 22 | 1012759 |
| 23 | 1205844 |
| 24 | 1425300 |
| 25 | 1673425 |
| 26 | 1952613 |
| 27 | 2265354 |
| 28 | 2614234 |
| 29 | 3001935 |
| 30 | 3431235 |
| 31 | 3905008 |
| 32 | 4426224 |
| 33 | 4997949 |
| 34 | 5623345 |
[13,129,534,1510,3435,6783,12124,20124,31545, 47245,68178,95394,130039,173355,226680,291448, 369189,461529,570190,696990,843843,1012759, 1205844,1425300,1673425,1952613,2265354,2614234, 3001935,3431235,3905008,4426224,4997949,5623345] |