The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 31 |
| 3 | 130 |
| 4 | 368 |
| 5 | 915 |
| 6 | 1993 |
| 7 | 3818 |
| 8 | 6805 |
| 9 | 11052 |
| 10 | 18352 |
| 11 | 28860 |
| 12 | 39870 |
| 13 | 61568 |
| 14 | 88347 |
| 15 | 109115 |
| 16 | 159804 |
| 17 | 215574 |
| 18 | 266628 |
| 19 | 362832 |
| 20 | 445236 |
| 21 | 541934 |
| 22 | 738893 |
| 23 | 903565 |
| 24 | 1011760 |
| 25 | 1295590 |
| 26 | 1650305 |
| 27 | 1800585 |
| 28 | 2280782 |
| 29 | 2748502 |
| 30 | 2923138 |
| 31 | 3779009 |
| 32 | 4358050 |
| 33 | 4724361 |
[5,31,130,368,915,1993,3818,6805,11052,18352, 28860,39870,61568,88347,109115,159804,215574, 266628,362832,445236,541934,738893,903565,1011760, 1295590,1650305,1800585,2280782,2748502,2923138, 3779009,4358050,4724361] |