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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 10 |
| 4 | 21 |
| 5 | 78 |
| 6 | 136 |
| 7 | 171 |
| 8 | 465 |
| 9 | 1830 |
| 10 | 3916 |
| 11 | 5671 |
| 12 | 8001 |
| 13 | 135460 |
| 14 | 183921 |
| 15 | 817281 |
| 16 | 2425503 |
| 17 | 2600340 |
| 18 | 5172936 |
| 19 | 9041878 |
| 20 | 9779253 |
| 21 | 46933516 |
| 22 | 49406770 |
| 23 | 62860078 |
| 24 | 198732016 |
| 25 | 235455850 |
| 26 | 269317236 |
| 27 | 989969256 |
| 28 | 3718884403 |
| 29 | 6105401253 |
| 30 | 8718403176 |
| 31 | 23347552095 |
| 32 | 286402257541 |
[1,3,10,21,78,136,171,465,1830,3916,5671,8001, 135460,183921,817281,2425503,2600340,5172936, 9041878,9779253,46933516,49406770,62860078, 198732016,235455850,269317236,989969256, 3718884403,6105401253,8718403176,23347552095, 286402257541] |