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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 13 |
| 3 | 32 |
| 4 | 77 |
| 5 | 186 |
| 6 | 449 |
| 7 | 1084 |
| 8 | 2617 |
| 9 | 6318 |
| 10 | 15253 |
| 11 | 36824 |
| 12 | 88901 |
| 13 | 214626 |
| 14 | 518153 |
| 15 | 1250932 |
| 16 | 3020017 |
| 17 | 7290966 |
| 18 | 17601949 |
| 19 | 42494864 |
| 20 | 102591677 |
| 21 | 247678218 |
| 22 | 597948113 |
| 23 | 1443574444 |
| 24 | 3485097001 |
| 25 | 8413768446 |
[1,6,13,32,77,186,449,1084,2617,6318,15253,36824, 88901,214626,518153,1250932,3020017,7290966, 17601949,42494864,102591677,247678218,597948113, 1443574444,3485097001,8413768446] |