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| n | a(n) |
|---|---|
| 5 | 1 |
| 6 | 5 |
| 7 | 15 |
| 8 | 35 |
| 9 | 70 |
| 10 | 121 |
| 11 | 190 |
| 12 | 280 |
| 13 | 395 |
| 14 | 535 |
| 15 | 711 |
| 16 | 920 |
| 17 | 1160 |
| 18 | 1425 |
| 19 | 1725 |
| 20 | 2041 |
| 21 | 2395 |
| 22 | 2775 |
| 23 | 3200 |
| 24 | 3645 |
| 25 | 4146 |
| 26 | 4640 |
| 27 | 5190 |
| 28 | 5730 |
| 29 | 6325 |
| 30 | 6915 |
| 31 | 7625 |
| 32 | 8270 |
| 33 | 9030 |
| 34 | 9745 |
| 35 | 10576 |
| 36 | 11320 |
| 37 | 12320 |
| 38 | 13185 |
| 39 | 14305 |
| 40 | 15281 |
| 41 | 16510 |
| 42 | 17480 |
| 43 | 18855 |
| 44 | 19835 |
| 45 | 21306 |
| 46 | 22435 |
| 47 | 24010 |
| 48 | 25025 |
| 49 | 26810 |
| 50 | 27790 |
| 51 | 29590 |
[1,5,15,35,70,121,190,280,395,535,711,920,1160, 1425,1725,2041,2395,2775,3200,3645,4146,4640,5190, 5730,6325,6915,7625,8270,9030,9745,10576,11320, 12320,13185,14305,15281,16510,17480,18855,19835, 21306,22435,24010,25025,26810,27790,29590] |