The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 3 | 21 |
| 4 | 169 |
| 5 | 117 |
| 6 | 190 |
| 7 | 1404 |
| 8 | 9976 |
| 9 | 3961 |
| 10 | 11935 |
| 11 | 19966 |
| 12 | 113401 |
| 13 | 98155 |
| 14 | 208879 |
| 15 | 261501 |
| 16 | 3338221 |
| 17 | 916475 |
| 18 | 3100671 |
| 19 | 9943039 |
| 20 | 31457140 |
| 21 | 50322871 |
| 22 | 100523871 |
| 23 | 264240373 |
| 24 | 2113871829 |
| 25 | 2012739435 |
| 26 | 532673535 |
| 27 | 7415513007 |
| 28 | 33017544153 |
| 29 | 17112759966 |
| 30 | 50983861215 |
| 31 | 59039022015 |
[21,169,117,190,1404,9976,3961,11935,19966,113401, 98155,208879,261501,3338221,916475,3100671, 9943039,31457140,50322871,100523871,264240373, 2113871829,2012739435,532673535,7415513007, 33017544153,17112759966,50983861215,59039022015] |