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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 146 |
| 3 | 1208 |
| 4 | 5848 |
| 5 | 20518 |
| 6 | 58114 |
| 7 | 141344 |
| 8 | 306816 |
| 9 | 609846 |
| 10 | 1129986 |
| 11 | 1977272 |
| 12 | 3299192 |
| 13 | 5288374 |
| 14 | 8190994 |
| 15 | 12315904 |
| 16 | 18044480 |
| 17 | 25841190 |
| 18 | 36264882 |
| 19 | 49980792 |
| 20 | 67773272 |
| 21 | 90559238 |
| 22 | 119402338 |
| 23 | 155527840 |
| 24 | 200338240 |
| 25 | 255429590 |
| 26 | 322608546 |
[6,146,1208,5848,20518,58114,141344,306816,609846, 1129986,1977272,3299192,5288374,8190994,12315904, 18044480,25841190,36264882,49980792,67773272, 90559238,119402338,155527840,200338240,255429590, 322608546] |