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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 50 |
| 3 | 283 |
| 4 | 1343 |
| 5 | 5434 |
| 6 | 19188 |
| 7 | 60484 |
| 8 | 173433 |
| 9 | 459198 |
| 10 | 1135975 |
| 11 | 2650373 |
| 12 | 5876032 |
| 13 | 12455509 |
| 14 | 25370717 |
| 15 | 49868689 |
| 16 | 94927157 |
| 17 | 175523369 |
| 18 | 316075856 |
| 19 | 555569995 |
| 20 | 955063241 |
| 21 | 1608505660 |
| 22 | 2658118770 |
| 23 | 4315965894 |
| 24 | 6893838077 |
| 25 | 10844191896 |
[7,50,283,1343,5434,19188,60484,173433,459198, 1135975,2650373,5876032,12455509,25370717, 49868689,94927157,175523369,316075856,555569995, 955063241,1608505660,2658118770,4315965894, 6893838077,10844191896] |