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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 15 |
| 3 | 43 |
| 4 | 60 |
| 5 | 156 |
| 6 | 201 |
| 7 | 357 |
| 8 | 406 |
| 9 | 699 |
| 10 | 807 |
| 11 | 1192 |
| 12 | 1288 |
| 13 | 1885 |
| 14 | 2089 |
| 15 | 2730 |
| 16 | 2955 |
| 17 | 3928 |
| 18 | 4224 |
| 19 | 5321 |
| 20 | 5650 |
| 21 | 7043 |
| 22 | 7508 |
| 23 | 9116 |
| 24 | 9557 |
| 25 | 11450 |
| 26 | 12083 |
| 27 | 14211 |
| 28 | 14876 |
| 29 | 17480 |
| 30 | 18205 |
| 31 | 21118 |
| 32 | 21874 |
| 33 | 25275 |
| 34 | 26192 |
| 35 | 29844 |
| 36 | 30949 |
| 37 | 35142 |
| 38 | 36391 |
| 39 | 41027 |
| 40 | 42308 |
| 41 | 47408 |
| 42 | 48889 |
[1,6,15,43,60,156,201,357,406,699,807,1192,1288, 1885,2089,2730,2955,3928,4224,5321,5650,7043,7508, 9116,9557,11450,12083,14211,14876,17480,18205, 21118,21874,25275,26192,29844,30949,35142,36391, 41027,42308,47408,48889] |