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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 4 |
| 2 | 12 |
| 3 | 27 |
| 4 | 53 |
| 5 | 95 |
| 6 | 159 |
| 7 | 252 |
| 8 | 382 |
| 9 | 558 |
| 10 | 790 |
| 11 | 1089 |
| 12 | 1467 |
| 13 | 1937 |
| 14 | 2513 |
| 15 | 3210 |
| 16 | 4044 |
| 17 | 5032 |
| 18 | 6192 |
| 19 | 7543 |
| 20 | 9105 |
| 21 | 10899 |
| 22 | 12947 |
| 23 | 15272 |
| 24 | 17898 |
| 25 | 20850 |
| 26 | 24154 |
| 27 | 27837 |
| 28 | 31927 |
| 29 | 36453 |
| 30 | 41445 |
| 31 | 46934 |
| 32 | 52952 |
| 33 | 59532 |
| 34 | 66708 |
| 35 | 74515 |
| 36 | 82989 |
| 37 | 92167 |
| 38 | 102087 |
| 39 | 112788 |
| 40 | 124310 |
| 41 | 136694 |
[0,4,12,27,53,95,159,252,382,558,790,1089,1467, 1937,2513,3210,4044,5032,6192,7543,9105,10899, 12947,15272,17898,20850,24154,27837,31927,36453, 41445,46934,52952,59532,66708,74515,82989,92167, 102087,112788,124310,136694] |