The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 6 |
| 3 | 11 |
| 4 | 50 |
| 5 | 137 |
| 6 | 98 |
| 7 | 363 |
| 8 | 1522 |
| 9 | 7129 |
| 10 | 14762 |
| 11 | 83711 |
| 12 | 172042 |
| 13 | 1145993 |
| 14 | 2343466 |
| 15 | 1195757 |
| 16 | 4873118 |
| 17 | 42142223 |
| 18 | 28548602 |
| 19 | 275295799 |
| 20 | 22334054 |
| 21 | 18858053 |
| 22 | 38186394 |
| 23 | 444316699 |
| 24 | 2695645910 |
| 25 | 34052522467 |
| 26 | 68791484534 |
| 27 | 312536252003 |
| 28 | 630809177806 |
| 29 | 9227046511387 |
| 30 | 18609365660294 |
| 31 | 290774257297357 |
[1,6,11,50,137,98,363,1522,7129,14762,83711, 172042,1145993,2343466,1195757,4873118,42142223, 28548602,275295799,22334054,18858053,38186394, 444316699,2695645910,34052522467,68791484534, 312536252003,630809177806,9227046511387, 18609365660294,290774257297357] |