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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 9 |
| 3 | 38 |
| 4 | 102 |
| 5 | 215 |
| 6 | 391 |
| 7 | 644 |
| 8 | 988 |
| 9 | 1437 |
| 10 | 2005 |
| 11 | 2706 |
| 12 | 3554 |
| 13 | 4563 |
| 14 | 5747 |
| 15 | 7120 |
| 16 | 8696 |
| 17 | 10489 |
| 18 | 12513 |
| 19 | 14782 |
| 20 | 17310 |
| 21 | 20111 |
| 22 | 23199 |
| 23 | 26588 |
| 24 | 30292 |
| 25 | 34325 |
| 26 | 38701 |
| 27 | 43434 |
| 28 | 48538 |
| 29 | 54027 |
| 30 | 59915 |
| 31 | 66216 |
| 32 | 72944 |
| 33 | 80113 |
| 34 | 87737 |
| 35 | 95830 |
| 36 | 104406 |
| 37 | 113479 |
| 38 | 123063 |
[0,1,9,38,102,215,391,644,988,1437,2005,2706,3554, 4563,5747,7120,8696,10489,12513,14782,17310,20111, 23199,26588,30292,34325,38701,43434,48538,54027, 59915,66216,72944,80113,87737,95830,104406,113479, 123063] |