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| n | a(n) |
|---|---|
| 1 | 25 |
| 2 | 79 |
| 3 | 238 |
| 4 | 720 |
| 5 | 2199 |
| 6 | 6717 |
| 7 | 20484 |
| 8 | 62464 |
| 9 | 190542 |
| 10 | 581259 |
| 11 | 1773061 |
| 12 | 5408458 |
| 13 | 16497878 |
| 14 | 50325018 |
| 15 | 153510819 |
| 16 | 468267241 |
| 17 | 1428396280 |
| 18 | 4357161996 |
| 19 | 13291031298 |
| 20 | 40542790911 |
| 21 | 123671208989 |
| 22 | 377245070870 |
| 23 | 1150743527834 |
| 24 | 3510213300150 |
[25,79,238,720,2199,6717,20484,62464,190542, 581259,1773061,5408458,16497878,50325018, 153510819,468267241,1428396280,4357161996, 13291031298,40542790911,123671208989,377245070870, 1150743527834,3510213300150] |