The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 30 |
| 3 | 116 |
| 4 | 290 |
| 5 | 652 |
| 6 | 1186 |
| 7 | 2092 |
| 8 | 3370 |
| 9 | 5212 |
| 10 | 7546 |
| 11 | 10828 |
| 12 | 14866 |
| 13 | 20260 |
| 14 | 26674 |
| 15 | 34508 |
| 16 | 43778 |
| 17 | 55364 |
| 18 | 68546 |
| 19 | 84644 |
| 20 | 102962 |
| 21 | 124172 |
| 22 | 147842 |
| 23 | 175772 |
| 24 | 206738 |
| 25 | 242372 |
| 26 | 281506 |
| 27 | 325652 |
| 28 | 374090 |
| 29 | 429356 |
| 30 | 488938 |
| 31 | 556348 |
| 32 | 629738 |
| 33 | 710468 |
| 34 | 797210 |
| 35 | 892492 |
| 36 | 994514 |
| 37 | 1107668 |
[4,30,116,290,652,1186,2092,3370,5212,7546,10828, 14866,20260,26674,34508,43778,55364,68546,84644, 102962,124172,147842,175772,206738,242372,281506, 325652,374090,429356,488938,556348,629738,710468, 797210,892492,994514,1107668] |