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 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 3 |
| 6 | 6 |
| 7 | 1 |
| 8 | 4 |
| 9 | 6 |
| 10 | 12 |
| 11 | 1 |
| 12 | 5 |
| 13 | 10 |
| 14 | 20 |
| 15 | 30 |
| 16 | 1 |
| 17 | 6 |
| 18 | 15 |
| 19 | 20 |
| 20 | 30 |
| 21 | 60 |
| 22 | 90 |
| 23 | 1 |
| 24 | 7 |
| 25 | 21 |
| 26 | 35 |
| 27 | 42 |
| 28 | 105 |
| 29 | 140 |
| 30 | 210 |
| 31 | 1 |
| 32 | 8 |
| 33 | 28 |
| 34 | 56 |
| 35 | 70 |
| 36 | 168 |
| 37 | 280 |
| 38 | 420 |
| 39 | 560 |
| 40 | 1 |
| 41 | 9 |
| 42 | 36 |
| 43 | 72 |
| 44 | 84 |
| 45 | 126 |
| 46 | 252 |
| 47 | 504 |
| 48 | 630 |
| 49 | 756 |
| 50 | 1260 |
| 51 | 1680 |
| 52 | 1 |
| 53 | 10 |
| 54 | 45 |
| 55 | 90 |
| 56 | 120 |
| 57 | 210 |
| 58 | 252 |
| 59 | 360 |
| 60 | 840 |
| 61 | 1260 |
| 62 | 2520 |
| 63 | 3150 |
| 64 | 4200 |
| 65 | 1 |
| 66 | 11 |
| 67 | 55 |
[1,1,2,1,3,6,1,4,6,12,1,5,10,20,30,1,6,15,20,30, 60,90,1,7,21,35,42,105,140,210,1,8,28,56,70,168, 280,420,560,1,9,36,72,84,126,252,504,630,756,1260, 1680,1,10,45,90,120,210,252,360,840,1260,2520, 3150,4200,1,11,55] |