| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 19 |
| 3 | 59 |
| 4 | 137 |
| 5 | 196 |
| 6 | 333 |
| 7 | 1195 |
| 8 | 1528 |
| 9 | 10363 |
| 10 | 42980 |
| 11 | 53343 |
| 12 | 149666 |
| 13 | 203009 |
| 14 | 4818873 |
| 15 | 5021882 |
| 16 | 14862637 |
| 17 | 19884519 |
| 18 | 94400713 |
| 19 | 586288797 |
| 20 | 680689510 |
| 21 | 2628357327 |
| 22 | 3309046837 |
| 23 | 5937404164 |
| 24 | 15183855165 |
| 25 | 51488969659 |
| 26 | 478584582096 |
| 27 | 1008658133851 |
| 28 | 48894175006944 |
[1,2,19,59,137,196,333,1195,1528,10363,42980, 53343,149666,203009,4818873,5021882,14862637, 19884519,94400713,586288797,680689510,2628357327, 3309046837,5937404164,15183855165,51488969659, 478584582096,1008658133851,48894175006944] |