The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 9 |
| 5 | 14 |
| 6 | 21 |
| 7 | 34 |
| 8 | 49 |
| 9 | 76 |
| 10 | 101 |
| 11 | 146 |
| 12 | 205 |
| 13 | 294 |
| 14 | 397 |
| 15 | 560 |
| 16 | 747 |
| 17 | 1028 |
| 18 | 1341 |
| 19 | 1810 |
| 20 | 2343 |
| 21 | 3178 |
| 22 | 4051 |
| 23 | 5370 |
| 24 | 6921 |
| 25 | 9014 |
| 26 | 11361 |
| 27 | 14838 |
| 28 | 18719 |
| 29 | 24082 |
| 30 | 29953 |
| 31 | 38220 |
| 32 | 47663 |
| 33 | 60550 |
| 34 | 74619 |
| 35 | 93848 |
| 36 | 115961 |
| 37 | 145320 |
| 38 | 177549 |
| 39 | 221676 |
| 40 | 270335 |
| 41 | 335124 |
[1,2,3,6,9,14,21,34,49,76,101,146,205,294,397,560, 747,1028,1341,1810,2343,3178,4051,5370,6921,9014, 11361,14838,18719,24082,29953,38220,47663,60550, 74619,93848,115961,145320,177549,221676,270335, 335124] |