The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 9 |
| 3 | 42 |
| 4 | 56 |
| 5 | 74 |
| 6 | 99 |
| 7 | 133 |
| 8 | 177 |
| 9 | 236 |
| 10 | 315 |
| 11 | 420 |
| 12 | 560 |
| 13 | 747 |
| 14 | 996 |
| 15 | 1328 |
| 16 | 1771 |
| 17 | 2362 |
| 18 | 3149 |
| 19 | 4199 |
| 20 | 5599 |
| 21 | 7466 |
| 22 | 9954 |
| 23 | 13273 |
| 24 | 17697 |
| 25 | 23596 |
| 26 | 31462 |
| 27 | 41950 |
| 28 | 74577 |
| 29 | 99437 |
| 30 | 132583 |
| 31 | 235703 |
| 32 | 314271 |
| 33 | 419028 |
| 34 | 558704 |
| 35 | 744938 |
| 36 | 993251 |
| 37 | 1324335 |
| 38 | 1765780 |
| 39 | 2354374 |
[4,9,42,56,74,99,133,177,236,315,420,560,747,996, 1328,1771,2362,3149,4199,5599,7466,9954,13273, 17697,23596,31462,41950,74577,99437,132583,235703, 314271,419028,558704,744938,993251,1324335, 1765780,2354374] |