The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 143 |
| 3 | 6520 |
| 4 | 307165 |
| 5 | 14493405 |
| 6 | 683903931 |
| 7 | 32271626438 |
| 8 | 1522813452263 |
| 9 | 71857577327143 |
| 10 | 3390770839381669 |
| 11 | 160001593732718856 |
| 12 | 7550056082308516761 |
| 13 | 356267369073405009281 |
| 14 | 16811323900505484274607 |
| 15 | 793282337427660173475274 |
[5,143,6520,307165,14493405,683903931,32271626438, 1522813452263,71857577327143,3390770839381669, 160001593732718856,7550056082308516761, 356267369073405009281,16811323900505484274607, 793282337427660173475274] |