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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 70 |
| 3 | 137 |
| 4 | 195 |
| 5 | 2094 |
| 6 | 7007 |
| 7 | 16464 |
| 8 | 91350 |
| 9 | 348956 |
| 10 | 1047508 |
| 11 | 4508452 |
| 12 | 17741919 |
| 13 | 60248568 |
| 14 | 237122355 |
| 15 | 928231841 |
| 16 | 3353015080 |
| 17 | 12819796262 |
| 18 | 49662120190 |
| 19 | 184865377971 |
| 20 | 701774848637 |
| 21 | 2697667496175 |
| 22 | 10183982612578 |
| 23 | 38658538187132 |
[3,70,137,195,2094,7007,16464,91350,348956, 1047508,4508452,17741919,60248568,237122355, 928231841,3353015080,12819796262,49662120190, 184865377971,701774848637,2697667496175, 10183982612578,38658538187132] |