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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 37 |
| 3 | 405 |
| 4 | 2225 |
| 5 | 11641 |
| 6 | 35677 |
| 7 | 114409 |
| 8 | 295701 |
| 9 | 718469 |
| 10 | 1475709 |
| 11 | 3093025 |
| 12 | 5771929 |
| 13 | 10895273 |
| 14 | 18785841 |
| 15 | 31414269 |
| 16 | 50274501 |
| 17 | 81288641 |
| 18 | 124066161 |
| 19 | 190860537 |
| 20 | 282399889 |
| 21 | 411505049 |
| 22 | 580614301 |
| 23 | 824814797 |
| 24 | 1138709849 |
| 25 | 1570665877 |
| 26 | 2115178249 |
| 27 | 2833746309 |
| 28 | 3732420861 |
| 29 | 4937226173 |
[5,37,405,2225,11641,35677,114409,295701,718469, 1475709,3093025,5771929,10895273,18785841, 31414269,50274501,81288641,124066161,190860537, 282399889,411505049,580614301,824814797, 1138709849,1570665877,2115178249,2833746309, 3732420861,4937226173] |