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 | 1 |
| 1 | 3 |
| 2 | 14 |
| 3 | 47 |
| 4 | 173 |
| 5 | 545 |
| 6 | 1682 |
| 7 | 4745 |
| 8 | 12791 |
| 9 | 32327 |
| 10 | 78040 |
| 11 | 179201 |
| 12 | 395178 |
| 13 | 837103 |
| 14 | 1713036 |
| 15 | 3391541 |
| 16 | 6520796 |
| 17 | 12195482 |
| 18 | 22245864 |
| 19 | 39638722 |
| 20 | 69130894 |
| 21 | 118164586 |
| 22 | 198257980 |
| 23 | 326885254 |
| 24 | 530284337 |
| 25 | 847202952 |
| 26 | 1334313866 |
| 27 | 2073348286 |
| 28 | 3181127987 |
| 29 | 4822620934 |
| 30 | 7228875542 |
[1,3,14,47,173,545,1682,4745,12791,32327,78040, 179201,395178,837103,1713036,3391541,6520796, 12195482,22245864,39638722,69130894,118164586, 198257980,326885254,530284337,847202952, 1334313866,2073348286,3181127987,4822620934, 7228875542] |