The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 5 |
| 1 | 6 |
| 2 | 6 |
| 3 | 7 |
| 4 | 8 |
| 5 | 10 |
| 6 | 13 |
| 7 | 18 |
| 8 | 26 |
| 9 | 39 |
| 10 | 60 |
| 11 | 94 |
| 12 | 149 |
| 13 | 238 |
| 14 | 382 |
| 15 | 615 |
| 16 | 992 |
| 17 | 1602 |
| 18 | 2589 |
| 19 | 4186 |
| 20 | 6770 |
| 21 | 10951 |
| 22 | 17716 |
| 23 | 28662 |
| 24 | 46373 |
| 25 | 75030 |
| 26 | 121398 |
| 27 | 196423 |
| 28 | 317816 |
| 29 | 514234 |
| 30 | 832045 |
| 31 | 1346274 |
| 32 | 2178314 |
| 33 | 3524583 |
| 34 | 5702892 |
| 35 | 9227470 |
| 36 | 14930357 |
| 37 | 24157822 |
| 38 | 39088174 |
| 39 | 63245991 |
| 40 | 102334160 |
[5,6,6,7,8,10,13,18,26,39,60,94,149,238,382,615, 992,1602,2589,4186,6770,10951,17716,28662,46373, 75030,121398,196423,317816,514234,832045,1346274, 2178314,3524583,5702892,9227470,14930357,24157822, 39088174,63245991,102334160] |