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 | 1 |
| 5 | 5 |
| 6 | 12 |
| 7 | 1 |
| 8 | 35 |
| 9 | 40 |
| 10 | 8 |
| 11 | 1 |
| 12 | 126 |
| 13 | 140 |
| 14 | 20 |
| 15 | 0 |
| 16 | 1 |
| 17 | 330 |
| 18 | 228 |
| 19 | 60 |
| 20 | 12 |
| 21 | 0 |
| 22 | 1 |
| 23 | 715 |
| 24 | 644 |
| 25 | 112 |
| 26 | 0 |
| 27 | 0 |
| 28 | 0 |
| 29 | 1 |
| 30 | 1365 |
| 31 | 1168 |
| 32 | 208 |
| 33 | 0 |
| 34 | 0 |
| 35 | 0 |
| 36 | 0 |
| 37 | 1 |
| 38 | 2380 |
| 39 | 1512 |
| 40 | 216 |
| 41 | 54 |
| 42 | 54 |
| 43 | 0 |
| 44 | 0 |
| 45 | 0 |
| 46 | 1 |
| 47 | 3876 |
| 48 | 3360 |
| 49 | 480 |
| 50 | 0 |
| 51 | 0 |
| 52 | 0 |
| 53 | 0 |
| 54 | 0 |
| 55 | 0 |
| 56 | 1 |
| 57 | 5985 |
| 58 | 5280 |
| 59 | 660 |
| 60 | 0 |
| 61 | 0 |
| 62 | 0 |
| 63 | 0 |
| 64 | 0 |
| 65 | 0 |
| 66 | 0 |
| 67 | 1 |
| 68 | 8855 |
| 69 | 6144 |
| 70 | 864 |
| 71 | 264 |
| 72 | 24 |
| 73 | 0 |
| 74 | 0 |
| 75 | 0 |
| 76 | 0 |
| 77 | 0 |
| 78 | 0 |
| 79 | 12 |
| 80 | 12650 |
[0,0,0,1,5,12,1,35,40,8,1,126,140,20,0,1,330,228, 60,12,0,1,715,644,112,0,0,0,1,1365,1168,208,0,0,0, 0,1,2380,1512,216,54,54,0,0,0,1,3876,3360,480,0,0, 0,0,0,0,1,5985,5280,660,0,0,0,0,0,0,0,1,8855,6144, 864,264,24,0,0,0,0,0,0,12,12650] |