| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 8 |
| 3 | 19 |
| 4 | 41 |
| 5 | 81 |
| 6 | 153 |
| 7 | 273 |
| 8 | 468 |
| 9 | 774 |
| 10 | 1240 |
| 11 | 1930 |
| 12 | 2933 |
| 13 | 4356 |
| 14 | 6341 |
| 15 | 9064 |
| 16 | 12743 |
| 17 | 17643 |
| 18 | 24093 |
| 19 | 32479 |
| 20 | 43270 |
| 21 | 57019 |
| 22 | 74377 |
| 23 | 96103 |
| 24 | 123089 |
| 25 | 156354 |
| 26 | 197081 |
| 27 | 246622 |
| 28 | 306519 |
| 29 | 378520 |
| 30 | 464614 |
| 31 | 567028 |
| 32 | 688276 |
| 33 | 831169 |
| 34 | 998845 |
| 35 | 1194793 |
| 36 | 1422899 |
| 37 | 1687447 |
| 38 | 1993182 |
[1,3,8,19,41,81,153,273,468,774,1240,1930,2933, 4356,6341,9064,12743,17643,24093,32479,43270, 57019,74377,96103,123089,156354,197081,246622, 306519,378520,464614,567028,688276,831169,998845, 1194793,1422899,1687447,1993182] |