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| n | a(n) |
|---|---|
| 1 | 30 |
| 2 | 138 |
| 3 | 318 |
| 4 | 570 |
| 5 | 894 |
| 6 | 1290 |
| 7 | 1758 |
| 8 | 2298 |
| 9 | 2910 |
| 10 | 3594 |
| 11 | 4350 |
| 12 | 5178 |
| 13 | 6078 |
| 14 | 7050 |
| 15 | 8094 |
| 16 | 9210 |
| 17 | 10398 |
| 18 | 11658 |
| 19 | 12990 |
| 20 | 14394 |
| 21 | 15870 |
| 22 | 17418 |
| 23 | 19038 |
| 24 | 20730 |
| 25 | 22494 |
| 26 | 24330 |
| 27 | 26238 |
| 28 | 28218 |
| 29 | 30270 |
| 30 | 32394 |
| 31 | 34590 |
| 32 | 36858 |
| 33 | 39198 |
| 34 | 41610 |
| 35 | 44094 |
| 36 | 46650 |
| 37 | 49278 |
| 38 | 51978 |
| 39 | 54750 |
| 40 | 57594 |
| 41 | 60510 |
[30,138,318,570,894,1290,1758,2298,2910,3594,4350, 5178,6078,7050,8094,9210,10398,11658,12990,14394, 15870,17418,19038,20730,22494,24330,26238,28218, 30270,32394,34590,36858,39198,41610,44094,46650, 49278,51978,54750,57594,60510] |