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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 4 |
| 2 | 13 |
| 3 | 41 |
| 4 | 82 |
| 5 | 158 |
| 6 | 255 |
| 7 | 403 |
| 8 | 580 |
| 9 | 824 |
| 10 | 1105 |
| 11 | 1469 |
| 12 | 1878 |
| 13 | 2386 |
| 14 | 2947 |
| 15 | 3623 |
| 16 | 4360 |
| 17 | 5228 |
| 18 | 6165 |
| 19 | 7249 |
| 20 | 8410 |
| 21 | 9734 |
| 22 | 11143 |
| 23 | 12731 |
| 24 | 14412 |
| 25 | 16288 |
| 26 | 18265 |
| 27 | 20453 |
| 28 | 22750 |
| 29 | 25274 |
| 30 | 27915 |
| 31 | 30799 |
| 32 | 33808 |
| 33 | 37076 |
| 34 | 40477 |
| 35 | 44153 |
| 36 | 47970 |
| 37 | 52078 |
| 38 | 56335 |
[0,4,13,41,82,158,255,403,580,824,1105,1469,1878, 2386,2947,3623,4360,5228,6165,7249,8410,9734, 11143,12731,14412,16288,18265,20453,22750,25274, 27915,30799,33808,37076,40477,44153,47970,52078, 56335] |