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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 3 |
| 7 | 4 |
| 8 | 5 |
| 9 | 7 |
| 10 | 10 |
| 11 | 14 |
| 12 | 19 |
| 13 | 26 |
| 14 | 37 |
| 15 | 52 |
| 16 | 72 |
| 17 | 99 |
| 18 | 138 |
| 19 | 193 |
| 20 | 269 |
| 21 | 373 |
| 22 | 518 |
| 23 | 722 |
| 24 | 1006 |
| 25 | 1399 |
| 26 | 1944 |
| 27 | 2705 |
| 28 | 3766 |
| 29 | 5241 |
| 30 | 7290 |
| 31 | 10141 |
| 32 | 14112 |
| 33 | 19638 |
| 34 | 27323 |
| 35 | 38012 |
| 36 | 52889 |
| 37 | 73593 |
| 38 | 102398 |
| 39 | 142470 |
| 40 | 198225 |
| 41 | 275809 |
| 42 | 383760 |
| 43 | 533954 |
| 44 | 742923 |
| 45 | 1033685 |
| 46 | 1438254 |
[1,1,1,1,1,2,3,4,5,7,10,14,19,26,37,52,72,99,138, 193,269,373,518,722,1006,1399,1944,2705,3766,5241, 7290,10141,14112,19638,27323,38012,52889,73593, 102398,142470,198225,275809,383760,533954,742923, 1033685,1438254] |