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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 49 |
| 2 | 147 |
| 3 | 294 |
| 4 | 490 |
| 5 | 735 |
| 6 | 1029 |
| 7 | 1372 |
| 8 | 1764 |
| 9 | 2205 |
| 10 | 2695 |
| 11 | 3234 |
| 12 | 3822 |
| 13 | 4459 |
| 14 | 5145 |
| 15 | 5880 |
| 16 | 6664 |
| 17 | 7497 |
| 18 | 8379 |
| 19 | 9310 |
| 20 | 10290 |
| 21 | 11319 |
| 22 | 12397 |
| 23 | 13524 |
| 24 | 14700 |
| 25 | 15925 |
| 26 | 17199 |
| 27 | 18522 |
| 28 | 19894 |
| 29 | 21315 |
| 30 | 22785 |
| 31 | 24304 |
| 32 | 25872 |
| 33 | 27489 |
| 34 | 29155 |
| 35 | 30870 |
| 36 | 32634 |
| 37 | 34447 |
| 38 | 36309 |
[0,49,147,294,490,735,1029,1372,1764,2205,2695, 3234,3822,4459,5145,5880,6664,7497,8379,9310, 10290,11319,12397,13524,14700,15925,17199,18522, 19894,21315,22785,24304,25872,27489,29155,30870, 32634,34447,36309] |