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 | 3 |
| 7 | 2 |
| 8 | 4 |
| 9 | 5 |
| 10 | 6 |
| 11 | 6 |
| 12 | 9 |
| 13 | 9 |
| 14 | 12 |
| 15 | 12 |
| 16 | 17 |
| 17 | 17 |
| 18 | 23 |
| 19 | 23 |
| 20 | 31 |
| 21 | 31 |
| 22 | 40 |
| 23 | 39 |
| 24 | 53 |
| 25 | 54 |
| 26 | 68 |
| 27 | 68 |
| 28 | 88 |
| 29 | 87 |
| 30 | 111 |
| 31 | 110 |
| 32 | 138 |
| 33 | 140 |
| 34 | 174 |
| 35 | 172 |
| 36 | 216 |
| 37 | 216 |
| 38 | 262 |
| 39 | 264 |
| 40 | 324 |
| 41 | 321 |
| 42 | 391 |
| 43 | 392 |
| 44 | 470 |
| 45 | 475 |
| 46 | 567 |
| 47 | 563 |
| 48 | 676 |
| 49 | 679 |
| 50 | 798 |
| 51 | 806 |
| 52 | 949 |
| 53 | 949 |
| 54 | 1116 |
| 55 | 1120 |
| 56 | 1300 |
| 57 | 1316 |
| 58 | 1523 |
[1,1,1,1,2,2,3,2,4,5,6,6,9,9,12,12,17,17,23,23,31, 31,40,39,53,54,68,68,88,87,111,110,138,140,174, 172,216,216,262,264,324,321,391,392,470,475,567, 563,676,679,798,806,949,949,1116,1120,1300,1316, 1523] |