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 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 1 |
| 14 | 0 |
| 15 | 1 |
| 16 | 1 |
| 17 | 2 |
| 18 | 2 |
| 19 | 5 |
| 20 | 4 |
| 21 | 9 |
| 22 | 10 |
| 23 | 17 |
| 24 | 20 |
| 25 | 35 |
| 26 | 40 |
| 27 | 65 |
| 28 | 81 |
| 29 | 122 |
| 30 | 154 |
| 31 | 231 |
| 32 | 294 |
| 33 | 427 |
| 34 | 556 |
| 35 | 786 |
| 36 | 1031 |
| 37 | 1448 |
| 38 | 1900 |
| 39 | 2635 |
| 40 | 3487 |
| 41 | 4784 |
| 42 | 6341 |
| 43 | 8659 |
| 44 | 11484 |
| 45 | 15592 |
| 46 | 20729 |
| 47 | 28007 |
| 48 | 37257 |
| 49 | 50210 |
| 50 | 66802 |
| 51 | 89792 |
| 52 | 119568 |
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