The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 12 |
| 5 | 16 |
| 6 | 20 |
| 7 | 26 |
| 8 | 32 |
| 9 | 40 |
| 10 | 46 |
| 11 | 54 |
| 12 | 64 |
| 13 | 72 |
| 14 | 80 |
| 15 | 92 |
| 16 | 104 |
| 17 | 116 |
| 18 | 128 |
| 19 | 140 |
| 20 | 152 |
| 21 | 164 |
| 22 | 180 |
| 23 | 196 |
| 24 | 212 |
[2,4,8,12,16,20,26,32,40,46,54,64,72,80,92,104, 116,128,140,152,164,180,196,212] |