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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 10 |
| 6 | 14 |
| 7 | 19 |
| 8 | 24 |
| 9 | 30 |
| 10 | 37 |
| 11 | 44 |
| 12 | 53 |
| 13 | 61 |
| 14 | 71 |
| 15 | 81 |
| 16 | 92 |
| 17 | 103 |
| 18 | 115 |
| 19 | 128 |
| 20 | 141 |
| 21 | 156 |
| 22 | 170 |
| 23 | 186 |
| 24 | 202 |
| 25 | 219 |
| 26 | 236 |
| 27 | 254 |
| 28 | 273 |
| 29 | 292 |
| 30 | 313 |
| 31 | 333 |
| 32 | 355 |
| 33 | 377 |
| 34 | 400 |
| 35 | 423 |
| 36 | 447 |
| 37 | 472 |
| 38 | 497 |
| 39 | 524 |
| 40 | 550 |
| 41 | 578 |
| 42 | 606 |
| 43 | 635 |
| 44 | 664 |
| 45 | 694 |
| 46 | 725 |
| 47 | 756 |
| 48 | 789 |
| 49 | 821 |
| 50 | 855 |
| 51 | 889 |
| 52 | 924 |
| 53 | 959 |
| 54 | 995 |
| 55 | 1032 |
[0,2,4,6,10,14,19,24,30,37,44,53,61,71,81,92,103, 115,128,141,156,170,186,202,219,236,254,273,292, 313,333,355,377,400,423,447,472,497,524,550,578, 606,635,664,694,725,756,789,821,855,889,924,959, 995,1032] |