The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 9 |
| 4 | 25 |
| 5 | 49 |
| 6 | 118 |
| 7 | 207 |
| 8 | 414 |
| 9 | 697 |
| 10 | 1240 |
| 11 | 1947 |
| 12 | 3299 |
| 13 | 4911 |
| 14 | 7690 |
| 15 | 11260 |
| 16 | 16787 |
| 17 | 23571 |
| 18 | 34111 |
| 19 | 46566 |
| 20 | 65168 |
| 21 | 87425 |
| 22 | 118613 |
| 23 | 155699 |
| 24 | 207823 |
| 25 | 267701 |
| 26 | 349081 |
| 27 | 444442 |
| 28 | 569884 |
| 29 | 714235 |
| 30 | 904372 |
| 31 | 1119056 |
| 32 | 1396739 |
| 33 | 1712996 |
| 34 | 2110652 |
| 35 | 2561649 |
| 36 | 3129206 |
[1,4,9,25,49,118,207,414,697,1240,1947,3299,4911, 7690,11260,16787,23571,34111,46566,65168,87425, 118613,155699,207823,267701,349081,444442,569884, 714235,904372,1119056,1396739,1712996,2110652, 2561649,3129206] |