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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 8 |
| 3 | 18 |
| 4 | 47 |
| 5 | 118 |
| 6 | 273 |
| 7 | 585 |
| 8 | 1174 |
| 9 | 2228 |
| 10 | 4030 |
| 11 | 6992 |
| 12 | 11697 |
| 13 | 18950 |
| 14 | 29839 |
| 15 | 45807 |
| 16 | 68736 |
| 17 | 101044 |
| 18 | 145796 |
| 19 | 206830 |
| 20 | 288899 |
| 21 | 397830 |
| 22 | 540701 |
| 23 | 726037 |
| 24 | 964026 |
| 25 | 1266756 |
| 26 | 1648474 |
| 27 | 2125868 |
| 28 | 2718373 |
| 29 | 3448502 |
| 30 | 4342203 |
| 31 | 5429243 |
| 32 | 6743620 |
| 33 | 8324004 |
| 34 | 10214208 |
[2,8,18,47,118,273,585,1174,2228,4030,6992,11697, 18950,29839,45807,68736,101044,145796,206830, 288899,397830,540701,726037,964026,1266756, 1648474,2125868,2718373,3448502,4342203,5429243, 6743620,8324004,10214208] |