The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 4 | 3740 |
| 5 | 66914 |
| 6 | 1084508 |
| 7 | 16848674 |
| 8 | 256844060 |
| 9 | 3881598434 |
| 10 | 58426959068 |
| 11 | 877826523554 |
| 12 | 13177356595100 |
| 13 | 197730071456354 |
| 14 | 2966439163566428 |
| 15 | 44500004197580834 |
| 16 | 667523980478413340 |
| 17 | 10013027130697435874 |
| 18 | 150196578927865178588 |
| 19 | 2252956887698068132514 |
[3740,66914,1084508,16848674,256844060,3881598434, 58426959068,877826523554,13177356595100, 197730071456354,2966439163566428, 44500004197580834,667523980478413340, 10013027130697435874,150196578927865178588, 2252956887698068132514] |