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) |
|---|---|
| 1 | 4 |
| 2 | 155 |
| 3 | 3702 |
| 4 | 39933 |
| 5 | 244676 |
| 6 | 1046455 |
| 7 | 3635046 |
| 8 | 10406049 |
| 9 | 26595892 |
| 10 | 60712839 |
| 11 | 128248632 |
| 12 | 253217949 |
| 13 | 472633812 |
| 14 | 837636667 |
| 15 | 1431878468 |
| 16 | 2356057659 |
| 17 | 3756191658 |
| 18 | 5844567389 |
| 19 | 8865989698 |
| 20 | 13147819241 |
| 21 | 19100995732 |
| 22 | 27324708263 |
| 23 | 38402817766 |
| 24 | 53116446341 |
| 25 | 72537301810 |
| 26 | 97894517685 |
[4,155,3702,39933,244676,1046455,3635046,10406049, 26595892,60712839,128248632,253217949,472633812, 837636667,1431878468,2356057659,3756191658, 5844567389,8865989698,13147819241,19100995732, 27324708263,38402817766,53116446341,72537301810, 97894517685] |