The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 5 |
| 3 | 10 |
| 4 | 17 |
| 5 | 26 |
| 6 | 43 |
| 7 | 65 |
| 8 | 95 |
| 9 | 140 |
| 10 | 201 |
| 11 | 283 |
| 12 | 395 |
| 13 | 545 |
| 14 | 740 |
| 15 | 1002 |
| 16 | 1343 |
| 17 | 1780 |
| 18 | 2350 |
| 19 | 3077 |
| 20 | 4002 |
| 21 | 5183 |
| 22 | 6670 |
| 23 | 8535 |
| 24 | 10880 |
| 25 | 13801 |
| 26 | 17426 |
| 27 | 21925 |
| 28 | 27475 |
| 29 | 34297 |
| 30 | 42677 |
| 31 | 52926 |
| 32 | 65415 |
| 33 | 80625 |
| 34 | 99077 |
| 35 | 121403 |
| 36 | 148386 |
| 37 | 180890 |
| 38 | 219960 |
| 39 | 266857 |
| 40 | 323002 |
| 41 | 390086 |
| 42 | 470125 |
[1,3,5,10,17,26,43,65,95,140,201,283,395,545,740, 1002,1343,1780,2350,3077,4002,5183,6670,8535, 10880,13801,17426,21925,27475,34297,42677,52926, 65415,80625,99077,121403,148386,180890,219960, 266857,323002,390086,470125] |