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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 14 |
| 3 | 40 |
| 4 | 89 |
| 5 | 186 |
| 6 | 327 |
| 7 | 562 |
| 8 | 891 |
| 9 | 1362 |
| 10 | 1957 |
| 11 | 2790 |
| 12 | 3813 |
| 13 | 5176 |
| 14 | 6795 |
| 15 | 8770 |
| 16 | 11105 |
| 17 | 14020 |
| 18 | 17335 |
| 19 | 21380 |
| 20 | 25981 |
| 21 | 31306 |
| 22 | 37247 |
| 23 | 44254 |
| 24 | 52021 |
| 25 | 60956 |
| 26 | 70767 |
| 27 | 81832 |
| 28 | 93971 |
| 29 | 107818 |
| 30 | 122745 |
| 31 | 139630 |
| 32 | 158011 |
| 33 | 178228 |
| 34 | 199949 |
| 35 | 223806 |
| 36 | 249349 |
| 37 | 277676 |
| 38 | 307887 |
[4,14,40,89,186,327,562,891,1362,1957,2790,3813, 5176,6795,8770,11105,14020,17335,21380,25981, 31306,37247,44254,52021,60956,70767,81832,93971, 107818,122745,139630,158011,178228,199949,223806, 249349,277676,307887] |