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 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 4 |
| 7 | 4 |
| 8 | 8 |
| 9 | 10 |
| 10 | 13 |
| 11 | 20 |
| 12 | 26 |
| 13 | 32 |
| 14 | 46 |
| 15 | 59 |
| 16 | 75 |
| 17 | 101 |
| 18 | 129 |
| 19 | 161 |
| 20 | 211 |
| 21 | 264 |
| 22 | 331 |
| 23 | 421 |
| 24 | 526 |
| 25 | 649 |
| 26 | 815 |
| 27 | 1004 |
| 28 | 1235 |
| 29 | 1526 |
| 30 | 1869 |
| 31 | 2275 |
| 32 | 2787 |
| 33 | 3382 |
| 34 | 4097 |
| 35 | 4967 |
| 36 | 5994 |
| 37 | 7205 |
| 38 | 8678 |
| 39 | 10396 |
| 40 | 12437 |
| 41 | 14869 |
| 42 | 17727 |
| 43 | 21076 |
| 44 | 25067 |
| 45 | 29713 |
| 46 | 35174 |
| 47 | 41596 |
| 48 | 49094 |
| 49 | 57827 |
| 50 | 68087 |
[0,1,1,1,3,4,4,8,10,13,20,26,32,46,59,75,101,129, 161,211,264,331,421,526,649,815,1004,1235,1526, 1869,2275,2787,3382,4097,4967,5994,7205,8678, 10396,12437,14869,17727,21076,25067,29713,35174, 41596,49094,57827,68087] |