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 | 1 |
| 2 | 3 |
| 3 | 22 |
| 4 | 44 |
| 5 | 355 |
| 6 | 710 |
| 7 | 1065 |
| 8 | 1420 |
| 9 | 1775 |
| 10 | 2130 |
| 11 | 2485 |
| 12 | 2840 |
| 13 | 3195 |
| 14 | 312689 |
| 15 | 1146408 |
| 16 | 5419351 |
| 17 | 10838702 |
| 18 | 6167950454 |
| 19 | 21053343141 |
| 20 | 42106686282 |
| 21 | 63160029423 |
| 22 | 84213372564 |
| 23 | 105266715705 |
| 24 | 8958937768937 |
| 25 | 17917875537874 |
| 26 | 428224593349304 |
| 27 | 856449186698608 |
| 28 | 6134899525417045 |
[1,3,22,44,355,710,1065,1420,1775,2130,2485,2840, 3195,312689,1146408,5419351,10838702,6167950454, 21053343141,42106686282,63160029423,84213372564, 105266715705,8958937768937,17917875537874, 428224593349304,856449186698608,6134899525417045] |