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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 5 |
| 4 | 9 |
| 5 | 19 |
| 6 | 33 |
| 7 | 57 |
| 8 | 87 |
| 9 | 136 |
| 10 | 206 |
| 11 | 311 |
| 12 | 446 |
| 13 | 650 |
| 14 | 914 |
| 15 | 1284 |
| 16 | 1762 |
| 17 | 2432 |
| 18 | 3276 |
| 19 | 4433 |
| 20 | 5888 |
| 21 | 7824 |
| 22 | 10272 |
| 23 | 13479 |
| 24 | 17471 |
| 25 | 22642 |
| 26 | 29087 |
| 27 | 37283 |
| 28 | 47453 |
| 29 | 60306 |
| 30 | 76112 |
| 31 | 95931 |
| 32 | 120201 |
| 33 | 150338 |
| 34 | 187141 |
| 35 | 232507 |
| 36 | 287591 |
| 37 | 355143 |
| 38 | 436849 |
| 39 | 536347 |
| 40 | 656282 |
| 41 | 801647 |
| 42 | 976095 |
[0,2,5,9,19,33,57,87,136,206,311,446,650,914,1284, 1762,2432,3276,4433,5888,7824,10272,13479,17471, 22642,29087,37283,47453,60306,76112,95931,120201, 150338,187141,232507,287591,355143,436849,536347, 656282,801647,976095] |