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| n | a(n) |
|---|---|
| 4 | 13 |
| 5 | 21 |
| 6 | 33 |
| 7 | 50 |
| 8 | 76 |
| 9 | 115 |
| 10 | 173 |
| 11 | 261 |
| 12 | 393 |
| 13 | 591 |
| 14 | 889 |
| 15 | 1336 |
| 16 | 2007 |
| 17 | 3015 |
| 18 | 4528 |
| 19 | 6800 |
| 20 | 10212 |
| 21 | 15335 |
| 22 | 23028 |
| 23 | 34580 |
| 24 | 51926 |
| 25 | 77973 |
| 26 | 117085 |
| 27 | 175815 |
| 28 | 264004 |
| 29 | 396428 |
| 30 | 595275 |
| 31 | 893863 |
| 32 | 1342221 |
| 33 | 2015473 |
| 34 | 3026425 |
| 35 | 4544465 |
| 36 | 6823946 |
| 37 | 10246803 |
| 38 | 15386547 |
| 39 | 23104360 |
[13,21,33,50,76,115,173,261,393,591,889,1336,2007, 3015,4528,6800,10212,15335,23028,34580,51926, 77973,117085,175815,264004,396428,595275,893863, 1342221,2015473,3026425,4544465,6823946,10246803, 15386547,23104360] |