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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 59 |
| 3 | 220 |
| 4 | 581 |
| 5 | 1162 |
| 6 | 2105 |
| 7 | 3370 |
| 8 | 5171 |
| 9 | 7384 |
| 10 | 10319 |
| 11 | 13744 |
| 12 | 18089 |
| 13 | 22990 |
| 14 | 29021 |
| 15 | 35662 |
| 16 | 43655 |
| 17 | 52300 |
| 18 | 62531 |
| 19 | 73444 |
| 20 | 86189 |
| 21 | 99634 |
| 22 | 115169 |
| 23 | 131410 |
| 24 | 150011 |
| 25 | 169312 |
| 26 | 191255 |
| 27 | 213880 |
| 28 | 239441 |
| 29 | 265654 |
| 30 | 295109 |
| 31 | 325174 |
| 32 | 358799 |
| 33 | 392980 |
| 34 | 431051 |
| 35 | 469612 |
| 36 | 512405 |
| 37 | 555610 |
[4,59,220,581,1162,2105,3370,5171,7384,10319, 13744,18089,22990,29021,35662,43655,52300,62531, 73444,86189,99634,115169,131410,150011,169312, 191255,213880,239441,265654,295109,325174,358799, 392980,431051,469612,512405,555610] |