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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 18 |
| 3 | 47 |
| 4 | 101 |
| 5 | 192 |
| 6 | 333 |
| 7 | 540 |
| 8 | 831 |
| 9 | 1226 |
| 10 | 1747 |
| 11 | 2418 |
| 12 | 3266 |
| 13 | 4319 |
| 14 | 5608 |
| 15 | 7166 |
| 16 | 9027 |
| 17 | 11229 |
| 18 | 13811 |
| 19 | 16814 |
| 20 | 20282 |
| 21 | 24260 |
| 22 | 28796 |
| 23 | 33940 |
| 24 | 39744 |
| 25 | 46262 |
| 26 | 53550 |
| 27 | 61667 |
| 28 | 70673 |
| 29 | 80631 |
| 30 | 91606 |
| 31 | 103664 |
| 32 | 116875 |
| 33 | 131310 |
| 34 | 147042 |
| 35 | 164147 |
| 36 | 182702 |
| 37 | 202787 |
| 38 | 224484 |
| 39 | 247877 |
[1,5,18,47,101,192,333,540,831,1226,1747,2418, 3266,4319,5608,7166,9027,11229,13811,16814,20282, 24260,28796,33940,39744,46262,53550,61667,70673, 80631,91606,103664,116875,131310,147042,164147, 182702,202787,224484,247877] |