The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 2 |
| 3 | 6 |
| 4 | 6 |
| 5 | 16 |
| 6 | 16 |
| 7 | 42 |
| 8 | 42 |
| 9 | 110 |
| 10 | 110 |
| 11 | 288 |
| 12 | 288 |
| 13 | 754 |
| 14 | 754 |
| 15 | 1974 |
| 16 | 1974 |
| 17 | 5168 |
| 18 | 5168 |
| 19 | 13530 |
| 20 | 13530 |
| 21 | 35422 |
| 22 | 35422 |
| 23 | 92736 |
| 24 | 92736 |
| 25 | 242786 |
| 26 | 242786 |
| 27 | 635622 |
| 28 | 635622 |
| 29 | 1664080 |
| 30 | 1664080 |
| 31 | 4356618 |
| 32 | 4356618 |
| 33 | 11405774 |
| 34 | 11405774 |
| 35 | 29860704 |
| 36 | 29860704 |
| 37 | 78176338 |
| 38 | 78176338 |
[0,2,2,6,6,16,16,42,42,110,110,288,288,754,754, 1974,1974,5168,5168,13530,13530,35422,35422,92736, 92736,242786,242786,635622,635622,1664080,1664080, 4356618,4356618,11405774,11405774,29860704, 29860704,78176338,78176338] |