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A048083 as a simple table
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 2 |
| 5 | 6 |
| 6 | 9 |
| 7 | 21 |
| 8 | 45 |
| 9 | 70 |
| 10 | 154 |
| 11 | 322 |
| 12 | 525 |
| 13 | 1125 |
| 14 | 2325 |
| 15 | 3921 |
| 16 | 8301 |
| 17 | 17061 |
| 18 | 29491 |
| 19 | 61915 |
| 20 | 126763 |
| 21 | 223210 |
| 22 | 465746 |
| 23 | 950818 |
| 24 | 1698453 |
| 25 | 3527109 |
| 26 | 7184421 |
| 27 | 12981421 |
| 28 | 26855641 |
| 29 | 54604081 |
| 30 | 99589963 |
| 31 | 205390163 |
| 32 | 416990563 |
| 33 | 766466053 |
| 34 | 1576646941 |
[0,0,0,2,6,9,21,45,70,154,322,525,1125,2325,3921, 8301,17061,29491,61915,126763,223210,465746, 950818,1698453,3527109,7184421,12981421,26855641, 54604081,99589963,205390163,416990563,766466053, 1576646941] |