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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 2 |
| 4 | 11 |
| 5 | 32 |
| 6 | 77 |
| 7 | 148 |
| 8 | 268 |
| 9 | 442 |
| 10 | 691 |
| 11 | 1018 |
| 12 | 1472 |
| 13 | 2036 |
| 14 | 2780 |
| 15 | 3686 |
| 16 | 4786 |
| 17 | 6100 |
| 18 | 7724 |
| 19 | 9598 |
| 20 | 11863 |
| 21 | 14454 |
| 22 | 17437 |
| 23 | 20818 |
| 24 | 24772 |
| 25 | 29172 |
| 26 | 34200 |
| 27 | 39794 |
| 28 | 46071 |
| 29 | 52986 |
| 30 | 60817 |
| 31 | 69314 |
| 32 | 78860 |
| 33 | 89292 |
| 34 | 100720 |
| 35 | 113122 |
| 36 | 126686 |
| 37 | 141244 |
| 38 | 157294 |
| 39 | 174566 |
| 40 | 193228 |
| 41 | 213172 |
| 42 | 234954 |
| 43 | 258058 |
| 44 | 283189 |
| 45 | 309946 |
| 46 | 338473 |
| 47 | 368782 |
| 48 | 401516 |
| 49 | 436040 |
[0,0,2,11,32,77,148,268,442,691,1018,1472,2036, 2780,3686,4786,6100,7724,9598,11863,14454,17437, 20818,24772,29172,34200,39794,46071,52986,60817, 69314,78860,89292,100720,113122,126686,141244, 157294,174566,193228,213172,234954,258058,283189, 309946,338473,368782,401516,436040] |