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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 30 |
| 2 | 30 |
| 3 | 60 |
| 4 | 90 |
| 5 | 150 |
| 6 | 240 |
| 7 | 390 |
| 8 | 630 |
| 9 | 1020 |
| 10 | 1650 |
| 11 | 2670 |
| 12 | 4320 |
| 13 | 6990 |
| 14 | 11310 |
| 15 | 18300 |
| 16 | 29610 |
| 17 | 47910 |
| 18 | 77520 |
| 19 | 125430 |
| 20 | 202950 |
| 21 | 328380 |
| 22 | 531330 |
| 23 | 859710 |
| 24 | 1391040 |
| 25 | 2250750 |
| 26 | 3641790 |
| 27 | 5892540 |
| 28 | 9534330 |
| 29 | 15426870 |
[0,30,30,60,90,150,240,390,630,1020,1650,2670, 4320,6990,11310,18300,29610,47910,77520,125430, 202950,328380,531330,859710,1391040,2250750, 3641790,5892540,9534330,15426870] |