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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 41 |
| 3 | 509 |
| 4 | 1381 |
| 5 | 5333 |
| 6 | 19661 |
| 7 | 32009 |
| 8 | 48677 |
| 9 | 70313 |
| 10 | 119173 |
| 11 | 202621 |
| 12 | 500009 |
| 13 | 780457 |
| 14 | 953321 |
| 15 | 1098509 |
| 16 | 1826141 |
| 17 | 2205481 |
| 18 | 2725897 |
| 19 | 3429509 |
| 20 | 3650701 |
| 21 | 4121213 |
| 22 | 7263401 |
| 23 | 8388617 |
| 24 | 11453161 |
| 25 | 12194509 |
| 26 | 21807113 |
| 27 | 26578697 |
| 28 | 30581501 |
| 29 | 35995657 |
[13,41,509,1381,5333,19661,32009,48677,70313, 119173,202621,500009,780457,953321,1098509, 1826141,2205481,2725897,3429509,3650701,4121213, 7263401,8388617,11453161,12194509,21807113, 26578697,30581501,35995657] |