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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 2 |
| 8 | 3 |
| 9 | 5 |
| 10 | 6 |
| 11 | 11 |
| 12 | 14 |
| 13 | 25 |
| 14 | 31 |
| 15 | 56 |
| 16 | 70 |
| 17 | 126 |
| 18 | 157 |
| 19 | 283 |
| 20 | 353 |
| 21 | 636 |
| 22 | 793 |
| 23 | 1429 |
| 24 | 1782 |
| 25 | 3211 |
| 26 | 4004 |
| 27 | 7215 |
| 28 | 8997 |
| 29 | 16212 |
| 30 | 20216 |
| 31 | 36428 |
| 32 | 45425 |
| 33 | 81853 |
| 34 | 102069 |
| 35 | 183922 |
| 36 | 229347 |
| 37 | 413269 |
| 38 | 515338 |
| 39 | 928607 |
| 40 | 1157954 |
| 41 | 2086561 |
| 42 | 2601899 |
[1,0,0,0,1,1,1,2,3,5,6,11,14,25,31,56,70,126,157, 283,353,636,793,1429,1782,3211,4004,7215,8997, 16212,20216,36428,45425,81853,102069,183922, 229347,413269,515338,928607,1157954,2086561, 2601899] |