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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 6 |
| 3 | 10 |
| 4 | 18 |
| 5 | 27 |
| 6 | 37 |
| 7 | 54 |
| 8 | 81 |
| 9 | 106 |
| 10 | 132 |
| 11 | 180 |
| 12 | 245 |
| 13 | 306 |
| 14 | 381 |
| 15 | 493 |
| 16 | 612 |
| 17 | 729 |
| 18 | 910 |
| 19 | 1173 |
| 20 | 1434 |
| 21 | 1662 |
| 22 | 1950 |
| 23 | 2379 |
| 24 | 2925 |
| 25 | 3522 |
| 26 | 4146 |
| 27 | 4831 |
| 28 | 5628 |
| 29 | 6600 |
| 30 | 7852 |
| 31 | 9363 |
| 32 | 10836 |
| 33 | 12169 |
| 34 | 13947 |
| 35 | 16734 |
| 36 | 20040 |
| 37 | 22875 |
| 38 | 25185 |
| 39 | 28003 |
| 40 | 32403 |
| 41 | 38622 |
| 42 | 45658 |
| 43 | 51810 |
| 44 | 56643 |
| 45 | 62263 |
| 46 | 71310 |
[1,3,6,10,18,27,37,54,81,106,132,180,245,306,381, 493,612,729,910,1173,1434,1662,1950,2379,2925, 3522,4146,4831,5628,6600,7852,9363,10836,12169, 13947,16734,20040,22875,25185,28003,32403,38622, 45658,51810,56643,62263,71310] |