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 | 6 |
| 4 | 32 |
| 5 | 100 |
| 6 | 240 |
| 7 | 490 |
| 8 | 896 |
| 9 | 1512 |
| 10 | 2400 |
| 11 | 3630 |
| 12 | 5280 |
| 13 | 7436 |
| 14 | 10192 |
| 15 | 13650 |
| 16 | 17920 |
| 17 | 23120 |
| 18 | 29376 |
| 19 | 36822 |
| 20 | 45600 |
| 21 | 55860 |
| 22 | 67760 |
| 23 | 81466 |
| 24 | 97152 |
| 25 | 115000 |
| 26 | 135200 |
| 27 | 157950 |
| 28 | 183456 |
| 29 | 211932 |
| 30 | 243600 |
| 31 | 278690 |
| 32 | 317440 |
| 33 | 360096 |
| 34 | 406912 |
| 35 | 458150 |
| 36 | 514080 |
| 37 | 574980 |
| 38 | 641136 |
| 39 | 712842 |
| 40 | 790400 |
[0,0,6,32,100,240,490,896,1512,2400,3630,5280, 7436,10192,13650,17920,23120,29376,36822,45600, 55860,67760,81466,97152,115000,135200,157950, 183456,211932,243600,278690,317440,360096,406912, 458150,514080,574980,641136,712842,790400] |