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| n | a(n) |
|---|---|
| 1 | 1551 |
| 2 | 1157 |
| 3 | 2555 |
| 4 | 6231 |
| 5 | 16906 |
| 6 | 44456 |
| 7 | 113146 |
| 8 | 311214 |
| 9 | 819606 |
| 10 | 2086566 |
| 11 | 5746545 |
| 12 | 15147605 |
| 13 | 38558032 |
| 14 | 106198296 |
| 15 | 280032267 |
| 16 | 712923101 |
| 17 | 1963719979 |
| 18 | 5179266001 |
| 19 | 13187734424 |
| 20 | 36328962794 |
| 21 | 95838112695 |
| 22 | 244064366602 |
| 23 | 672411482149 |
[1551,1157,2555,6231,16906,44456,113146,311214, 819606,2086566,5746545,15147605,38558032, 106198296,280032267,712923101,1963719979, 5179266001,13187734424,36328962794,95838112695, 244064366602,672411482149] |