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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 18 |
| 3 | 40 |
| 4 | 76 |
| 5 | 132 |
| 6 | 214 |
| 7 | 325 |
| 8 | 469 |
| 9 | 652 |
| 10 | 878 |
| 11 | 1150 |
| 12 | 1474 |
| 13 | 1856 |
| 14 | 2298 |
| 15 | 2803 |
| 16 | 3379 |
| 17 | 4032 |
| 18 | 4762 |
| 19 | 5572 |
| 20 | 6472 |
| 21 | 7468 |
| 22 | 8558 |
| 23 | 9745 |
| 24 | 11041 |
| 25 | 12452 |
| 26 | 13974 |
| 27 | 15610 |
| 28 | 17374 |
| 29 | 19272 |
| 30 | 21298 |
| 31 | 23455 |
| 32 | 25759 |
| 33 | 28216 |
| 34 | 30818 |
| 35 | 33568 |
| 36 | 36484 |
| 37 | 39572 |
| 38 | 42822 |
| 39 | 46237 |
| 40 | 49837 |
| 41 | 53628 |
| 42 | 57598 |
[1,6,18,40,76,132,214,325,469,652,878,1150,1474, 1856,2298,2803,3379,4032,4762,5572,6472,7468,8558, 9745,11041,12452,13974,15610,17374,19272,21298, 23455,25759,28216,30818,33568,36484,39572,42822, 46237,49837,53628,57598] |