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| n | a(n) |
|---|---|
| 1 | 148 |
| 2 | 4690 |
| 3 | 49646 |
| 4 | 316136 |
| 5 | 1548633 |
| 6 | 6621074 |
| 7 | 26250443 |
| 8 | 98910688 |
| 9 | 356869229 |
| 10 | 1233491661 |
| 11 | 4078987936 |
| 12 | 12893958739 |
| 13 | 38971222534 |
| 14 | 112766372283 |
| 15 | 313016886779 |
| 16 | 835552379045 |
| 17 | 2150549167905 |
| 18 | 5351315229801 |
| 19 | 12907390753903 |
| 20 | 30251757926890 |
[148,4690,49646,316136,1548633,6621074,26250443, 98910688,356869229,1233491661,4078987936, 12893958739,38971222534,112766372283,313016886779, 835552379045,2150549167905,5351315229801, 12907390753903,30251757926890] |