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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 32 |
| 6 | 128 |
| 7 | 344 |
| 8 | 1072 |
| 9 | 3400 |
| 10 | 9832 |
| 11 | 27600 |
| 12 | 77000 |
| 13 | 211736 |
| 14 | 572560 |
| 15 | 1534512 |
| 16 | 4072664 |
| 17 | 10725424 |
| 18 | 28035128 |
| 19 | 72831272 |
| 20 | 188139616 |
| 21 | 483452824 |
| 22 | 1236865976 |
| 23 | 3150044696 |
| 24 | 7994665480 |
| 25 | 20209319824 |
| 26 | 50942982080 |
[0,0,0,0,32,128,344,1072,3400,9832,27600,77000, 211736,572560,1534512,4072664,10725424,28035128, 72831272,188139616,483452824,1236865976, 3150044696,7994665480,20209319824,50942982080] |