The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 61 |
| 2 | 153 |
| 3 | 359 |
| 4 | 811 |
| 5 | 1825 |
| 6 | 4073 |
| 7 | 9117 |
| 8 | 20435 |
| 9 | 46019 |
| 10 | 104103 |
| 11 | 236721 |
| 12 | 541185 |
| 13 | 1243505 |
| 14 | 2872291 |
| 15 | 6664963 |
| 16 | 15538035 |
| 17 | 36366709 |
| 18 | 85451073 |
| 19 | 201438293 |
| 20 | 476368999 |
| 21 | 1129466571 |
| 22 | 2684618219 |
| 23 | 6394000481 |
| 24 | 15257754137 |
| 25 | 36465654269 |
| 26 | 87277538267 |
[61,153,359,811,1825,4073,9117,20435,46019,104103, 236721,541185,1243505,2872291,6664963,15538035, 36366709,85451073,201438293,476368999,1129466571, 2684618219,6394000481,15257754137,36465654269, 87277538267] |