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 | 46 |
| 6 | 103 |
| 7 | 163 |
| 8 | 307 |
| 9 | 478 |
| 10 | 791 |
| 11 | 1143 |
| 12 | 1818 |
| 13 | 2495 |
| 14 | 3663 |
| 15 | 4994 |
| 16 | 7002 |
| 17 | 9154 |
| 18 | 12532 |
| 19 | 15986 |
| 20 | 21200 |
| 21 | 26726 |
| 22 | 34398 |
| 23 | 42532 |
| 24 | 54145 |
| 25 | 65791 |
| 26 | 81872 |
| 27 | 98871 |
| 28 | 121163 |
| 29 | 144174 |
| 30 | 175083 |
| 31 | 206075 |
| 32 | 246947 |
| 33 | 289116 |
| 34 | 342271 |
| 35 | 397027 |
| 36 | 467462 |
| 37 | 537495 |
| 38 | 626427 |
[1,4,9,25,46,103,163,307,478,791,1143,1818,2495, 3663,4994,7002,9154,12532,15986,21200,26726,34398, 42532,54145,65791,81872,98871,121163,144174, 175083,206075,246947,289116,342271,397027,467462, 537495,626427] |