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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 18 |
| 3 | 116 |
| 4 | 395 |
| 5 | 989 |
| 6 | 2068 |
| 7 | 3838 |
| 8 | 6541 |
| 9 | 10455 |
| 10 | 15894 |
| 11 | 23208 |
| 12 | 32783 |
| 13 | 45041 |
| 14 | 60440 |
| 15 | 79474 |
| 16 | 102673 |
| 17 | 130603 |
| 18 | 163866 |
| 19 | 203100 |
| 20 | 248979 |
| 21 | 302213 |
| 22 | 363548 |
| 23 | 433766 |
| 24 | 513685 |
| 25 | 604159 |
| 26 | 706078 |
| 27 | 820368 |
| 28 | 947991 |
| 29 | 1089945 |
| 30 | 1247264 |
| 31 | 1421018 |
| 32 | 1612313 |
| 33 | 1822291 |
[3,18,116,395,989,2068,3838,6541,10455,15894, 23208,32783,45041,60440,79474,102673,130603, 163866,203100,248979,302213,363548,433766,513685, 604159,706078,820368,947991,1089945,1247264, 1421018,1612313,1822291] |