The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 6 |
| 3 | 12 |
| 4 | 24 |
| 5 | 50 |
| 6 | 102 |
| 7 | 196 |
| 8 | 388 |
| 9 | 804 |
| 10 | 1652 |
| 11 | 3156 |
| 12 | 6228 |
| 13 | 12884 |
| 14 | 26452 |
| 15 | 50516 |
| 16 | 99668 |
| 17 | 206164 |
| 18 | 423252 |
| 19 | 808276 |
| 20 | 1594708 |
| 21 | 3298644 |
| 22 | 6772052 |
| 23 | 12932436 |
| 24 | 25515348 |
| 25 | 52778324 |
| 26 | 108352852 |
| 27 | 206918996 |
| 28 | 408245588 |
| 29 | 844453204 |
| 30 | 1733645652 |
| 31 | 3310703956 |
| 32 | 6531929428 |
[1,3,6,12,24,50,102,196,388,804,1652,3156,6228, 12884,26452,50516,99668,206164,423252,808276, 1594708,3298644,6772052,12932436,25515348, 52778324,108352852,206918996,408245588,844453204, 1733645652,3310703956,6531929428] |