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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 12 |
| 4 | 21 |
| 5 | 60 |
| 6 | 184 |
| 7 | 280 |
| 8 | 364 |
| 9 | 1456 |
| 10 | 3124 |
| 11 | 5236 |
| 12 | 17185 |
| 13 | 25249 |
| 14 | 49504 |
| 15 | 233776 |
| 16 | 364144 |
| 17 | 775369 |
| 18 | 3864169 |
| 19 | 8794864 |
| 20 | 10869664 |
| 21 | 32384209 |
| 22 | 105361344 |
| 23 | 173899609 |
| 24 | 425088976 |
| 25 | 2140195264 |
| 26 | 2805544681 |
| 27 | 10310263441 |
| 28 | 11940537961 |
| 29 | 38432362081 |
| 30 | 43395268849 |
| 31 | 51802119889 |
| 32 | 299530084681 |
[2,3,12,21,60,184,280,364,1456,3124,5236,17185, 25249,49504,233776,364144,775369,3864169,8794864, 10869664,32384209,105361344,173899609,425088976, 2140195264,2805544681,10310263441,11940537961, 38432362081,43395268849,51802119889,299530084681] |