The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 12 |
| 3 | 31 |
| 4 | 40 |
| 5 | 411 |
| 6 | 1638 |
| 7 | 2352 |
| 8 | 9465 |
| 9 | 263284 |
| 10 | 647498 |
| 11 | 1227466 |
| 12 | 3179974 |
| 13 | 4027111 |
| 14 | 5382959 |
| 15 | 29444851 |
| 16 | 32585267 |
| 17 | 50402546 |
| 18 | 52610042 |
| 19 | 98185445 |
| 20 | 3750320631 |
| 21 | 14471636075 |
| 22 | 79389982446 |
| 23 | 157183654414 |
[6,12,31,40,411,1638,2352,9465,263284,647498, 1227466,3179974,4027111,5382959,29444851,32585267, 50402546,52610042,98185445,3750320631,14471636075, 79389982446,157183654414] |