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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 4 |
| 6 | 4 |
| 7 | 7 |
| 8 | 7 |
| 9 | 10 |
| 10 | 19 |
| 11 | 22 |
| 12 | 40 |
| 13 | 43 |
| 14 | 70 |
| 15 | 100 |
| 16 | 136 |
| 17 | 220 |
| 18 | 265 |
| 19 | 430 |
| 20 | 565 |
| 21 | 838 |
| 22 | 1225 |
| 23 | 1633 |
| 24 | 2515 |
| 25 | 3328 |
| 26 | 5029 |
| 27 | 7003 |
| 28 | 9928 |
| 29 | 14548 |
| 30 | 19912 |
| 31 | 29635 |
| 32 | 40921 |
| 33 | 59419 |
| 34 | 84565 |
| 35 | 119155 |
| 36 | 173470 |
| 37 | 241918 |
| 38 | 351727 |
| 39 | 495613 |
| 40 | 709192 |
| 41 | 1016023 |
| 42 | 1434946 |
| 43 | 2071204 |
| 44 | 2921785 |
| 45 | 4198780 |
| 46 | 5969854 |
| 47 | 8503618 |
| 48 | 12183466 |
| 49 | 17268973 |
| 50 | 24779806 |
[1,1,1,1,1,4,4,7,7,10,19,22,40,43,70,100,136,220, 265,430,565,838,1225,1633,2515,3328,5029,7003, 9928,14548,19912,29635,40921,59419,84565,119155, 173470,241918,351727,495613,709192,1016023, 1434946,2071204,2921785,4198780,5969854,8503618, 12183466,17268973,24779806] |