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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 34 |
| 3 | 109 |
| 4 | 316 |
| 5 | 859 |
| 6 | 2234 |
| 7 | 5625 |
| 8 | 13816 |
| 9 | 33271 |
| 10 | 78838 |
| 11 | 184309 |
| 12 | 425972 |
| 13 | 974835 |
| 14 | 2211826 |
| 15 | 4980721 |
| 16 | 11141104 |
| 17 | 24772591 |
| 18 | 54788078 |
| 19 | 120586221 |
| 20 | 264241132 |
| 21 | 576716779 |
| 22 | 1254096874 |
| 23 | 2717908969 |
| 24 | 5872025576 |
| 25 | 12650020839 |
| 26 | 27179089894 |
[9,34,109,316,859,2234,5625,13816,33271,78838, 184309,425972,974835,2211826,4980721,11141104, 24772591,54788078,120586221,264241132,576716779, 1254096874,2717908969,5872025576,12650020839, 27179089894] |