The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 7 |
| 5 | 9 |
| 6 | 14 |
| 7 | 19 |
| 8 | 21 |
| 9 | 28 |
| 10 | 34 |
| 11 | 49 |
| 12 | 70 |
| 13 | 84 |
| 14 | 109 |
| 15 | 119 |
| 16 | 154 |
| 17 | 217 |
| 18 | 259 |
| 19 | 364 |
| 20 | 609 |
| 21 | 784 |
| 22 | 1099 |
| 23 | 1834 |
| 24 | 5509 |
[0,1,4,7,9,14,19,21,28,34,49,70,84,109,119,154, 217,259,364,609,784,1099,1834,5509] |