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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 2 |
| 7 | 3 |
| 8 | 4 |
| 9 | 5 |
| 10 | 6 |
| 11 | 7 |
| 12 | 8 |
| 13 | 10 |
| 14 | 12 |
| 15 | 15 |
| 16 | 18 |
| 17 | 22 |
| 18 | 26 |
| 19 | 31 |
| 20 | 38 |
| 21 | 46 |
| 22 | 55 |
| 23 | 66 |
| 24 | 79 |
| 25 | 95 |
| 26 | 114 |
| 27 | 137 |
| 28 | 164 |
| 29 | 197 |
| 30 | 237 |
| 31 | 284 |
| 32 | 341 |
| 33 | 410 |
| 34 | 492 |
| 35 | 590 |
| 36 | 708 |
| 37 | 850 |
| 38 | 1020 |
| 39 | 1224 |
| 40 | 1469 |
| 41 | 1763 |
| 42 | 2116 |
| 43 | 2539 |
| 44 | 3047 |
| 45 | 3657 |
| 46 | 4388 |
| 47 | 5266 |
| 48 | 6319 |
| 49 | 7583 |
| 50 | 9100 |
| 51 | 10920 |
| 52 | 13104 |
| 53 | 15725 |
| 54 | 18870 |
| 55 | 22644 |
[1,1,1,1,2,2,2,3,4,5,6,7,8,10,12,15,18,22,26,31, 38,46,55,66,79,95,114,137,164,197,237,284,341,410, 492,590,708,850,1020,1224,1469,1763,2116,2539, 3047,3657,4388,5266,6319,7583,9100,10920,13104, 15725,18870,22644] |