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 | 6 |
| 6 | 0 |
| 7 | 8 |
| 8 | 0 |
| 9 | 10 |
| 10 | 0 |
| 11 | 12 |
| 12 | 0 |
| 13 | 14 |
| 14 | 0 |
| 15 | 18 |
| 16 | 18 |
| 17 | 18 |
| 18 | 0 |
| 19 | 20 |
| 20 | 0 |
| 21 | 22 |
| 22 | 24 |
| 23 | 24 |
| 24 | 0 |
| 25 | 26 |
| 26 | 30 |
| 27 | 28 |
| 28 | 30 |
| 29 | 30 |
| 30 | 0 |
| 31 | 32 |
| 32 | 36 |
| 33 | 34 |
| 34 | 36 |
| 35 | 36 |
| 36 | 0 |
| 37 | 38 |
| 38 | 40 |
| 39 | 40 |
| 40 | 42 |
| 41 | 42 |
| 42 | 0 |
| 43 | 44 |
| 44 | 48 |
| 45 | 46 |
| 46 | 48 |
| 47 | 48 |
| 48 | 0 |
| 49 | 50 |
| 50 | 54 |
| 51 | 52 |
| 52 | 54 |
| 53 | 54 |
| 54 | 60 |
| 55 | 56 |
| 56 | 60 |
| 57 | 58 |
| 58 | 60 |
| 59 | 60 |
| 60 | 0 |
| 61 | 62 |
| 62 | 66 |
| 63 | 64 |
| 64 | 66 |
| 65 | 66 |
| 66 | 0 |
| 67 | 68 |
| 68 | 70 |
| 69 | 70 |
| 70 | 0 |
| 71 | 72 |
| 72 | 0 |
| 73 | 74 |
| 74 | 78 |
| 75 | 76 |
| 76 | 78 |
| 77 | 78 |
| 78 | 0 |
[0,0,0,0,6,0,8,0,10,0,12,0,14,0,18,18,18,0,20,0, 22,24,24,0,26,30,28,30,30,0,32,36,34,36,36,0,38, 40,40,42,42,0,44,48,46,48,48,0,50,54,52,54,54,60, 56,60,58,60,60,0,62,66,64,66,66,0,68,70,70,0,72,0, 74,78,76,78,78,0] |