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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 13 |
| 3 | 45 |
| 4 | 126 |
| 5 | 281 |
| 6 | 550 |
| 7 | 995 |
| 8 | 1703 |
| 9 | 2793 |
| 10 | 4424 |
| 11 | 6804 |
| 12 | 10200 |
| 13 | 14949 |
| 14 | 21470 |
| 15 | 30277 |
| 16 | 41993 |
| 17 | 57365 |
| 18 | 77280 |
| 19 | 102782 |
| 20 | 135090 |
| 21 | 175617 |
| 22 | 225990 |
| 23 | 288071 |
| 24 | 363979 |
| 25 | 456113 |
| 26 | 567176 |
| 27 | 700200 |
| 28 | 858572 |
| 29 | 1046061 |
| 30 | 1266846 |
| 31 | 1525545 |
| 32 | 1827245 |
| 33 | 2177533 |
| 34 | 2582528 |
[7,13,45,126,281,550,995,1703,2793,4424,6804, 10200,14949,21470,30277,41993,57365,77280,102782, 135090,175617,225990,288071,363979,456113,567176, 700200,858572,1046061,1266846,1525545,1827245, 2177533,2582528] |