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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 10 |
| 3 | 170 |
| 4 | 570 |
| 5 | 780 |
| 6 | 950 |
| 7 | 1420 |
| 8 | 2380 |
| 9 | 2730 |
| 10 | 3850 |
| 11 | 4120 |
| 12 | 4300 |
| 13 | 5850 |
| 14 | 6360 |
| 15 | 6460 |
| 16 | 6800 |
| 17 | 6970 |
| 18 | 7100 |
| 19 | 7240 |
| 20 | 8720 |
| 21 | 9630 |
| 22 | 10150 |
| 23 | 10580 |
| 24 | 11010 |
| 25 | 11170 |
| 26 | 11830 |
| 27 | 12300 |
| 28 | 14290 |
| 29 | 16330 |
| 30 | 17670 |
| 31 | 17810 |
| 32 | 17850 |
| 33 | 17860 |
| 34 | 18940 |
| 35 | 19030 |
| 36 | 20500 |
| 37 | 21930 |
| 38 | 23960 |
| 39 | 24490 |
| 40 | 25830 |
| 41 | 26050 |
[4,10,170,570,780,950,1420,2380,2730,3850,4120, 4300,5850,6360,6460,6800,6970,7100,7240,8720,9630, 10150,10580,11010,11170,11830,12300,14290,16330, 17670,17810,17850,17860,18940,19030,20500,21930, 23960,24490,25830,26050] |