The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 2 |
| 4 | 12 |
| 5 | 39 |
| 6 | 95 |
| 7 | 193 |
| 8 | 355 |
| 9 | 597 |
| 10 | 943 |
| 11 | 1426 |
| 12 | 2071 |
| 13 | 2904 |
| 14 | 3977 |
| 15 | 5306 |
| 16 | 6956 |
| 17 | 8963 |
| 18 | 11370 |
| 19 | 14225 |
| 20 | 17587 |
| 21 | 21515 |
| 22 | 26053 |
| 23 | 31310 |
| 24 | 37282 |
| 25 | 44061 |
| 26 | 51785 |
| 27 | 60436 |
| 28 | 70127 |
| 29 | 80939 |
| 30 | 92952 |
| 31 | 106267 |
| 32 | 120982 |
| 33 | 137124 |
| 34 | 154841 |
| 35 | 174225 |
| 36 | 195366 |
| 37 | 218394 |
| 38 | 243457 |
| 39 | 270505 |
| 40 | 299749 |
| 41 | 331441 |
[0,0,2,12,39,95,193,355,597,943,1426,2071,2904, 3977,5306,6956,8963,11370,14225,17587,21515,26053, 31310,37282,44061,51785,60436,70127,80939,92952, 106267,120982,137124,154841,174225,195366,218394, 243457,270505,299749,331441] |