The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 6 |
| 3 | 10 |
| 4 | 14 |
| 5 | 16 |
| 6 | 20 |
| 7 | 32 |
| 8 | 46 |
| 9 | 52 |
| 10 | 64 |
| 11 | 74 |
| 12 | 128 |
| 13 | 178 |
| 14 | 298 |
| 15 | 346 |
| 16 | 502 |
| 17 | 614 |
| 18 | 634 |
| 19 | 1912 |
| 20 | 60394 |
| 21 | 92116 |
[3,6,10,14,16,20,32,46,52,64,74,128,178,298,346, 502,614,634,1912,60394,92116] |