| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 7 |
| 6 | 10 |
| 7 | 13 |
| 8 | 25 |
| 9 | 46 |
| 10 | 76 |
| 11 | 115 |
| 12 | 190 |
| 13 | 328 |
| 14 | 556 |
| 15 | 901 |
| 16 | 1471 |
| 17 | 2455 |
| 18 | 4123 |
| 19 | 6826 |
| 20 | 11239 |
| 21 | 18604 |
| 22 | 30973 |
| 23 | 51451 |
| 24 | 85168 |
| 25 | 140980 |
| 26 | 233899 |
| 27 | 388252 |
| 28 | 643756 |
| 29 | 1066696 |
| 30 | 1768393 |
| 31 | 2933149 |
| 32 | 4864417 |
| 33 | 8064505 |
| 34 | 13369684 |
| 35 | 22169131 |
| 36 | 36762382 |
| 37 | 60955897 |
| 38 | 101064949 |
| 39 | 167572342 |
| 40 | 277859488 |
| 41 | 460727179 |
| 42 | 763922026 |
| 43 | 1266639052 |
[1,1,1,1,4,7,10,13,25,46,76,115,190,328,556,901, 1471,2455,4123,6826,11239,18604,30973,51451,85168, 140980,233899,388252,643756,1066696,1768393, 2933149,4864417,8064505,13369684,22169131, 36762382,60955897,101064949,167572342,277859488, 460727179,763922026,1266639052] |