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 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 4 |
| 7 | 5 |
| 8 | 9 |
| 9 | 14 |
| 10 | 19 |
| 11 | 26 |
| 12 | 42 |
| 13 | 51 |
| 14 | 74 |
| 15 | 103 |
| 16 | 136 |
| 17 | 174 |
| 18 | 246 |
| 19 | 303 |
| 20 | 411 |
| 21 | 523 |
| 22 | 674 |
| 23 | 844 |
| 24 | 1114 |
| 25 | 1364 |
| 26 | 1748 |
| 27 | 2174 |
| 28 | 2738 |
| 29 | 3354 |
| 30 | 4247 |
| 31 | 5139 |
| 32 | 6413 |
| 33 | 7813 |
| 34 | 9613 |
| 35 | 11630 |
| 36 | 14328 |
| 37 | 17169 |
| 38 | 20958 |
| 39 | 25180 |
| 40 | 30497 |
| 41 | 36401 |
| 42 | 44025 |
| 43 | 52285 |
| 44 | 62834 |
| 45 | 74626 |
| 46 | 89111 |
| 47 | 105374 |
| 48 | 125662 |
[0,0,0,1,1,2,4,5,9,14,19,26,42,51,74,103,136,174, 246,303,411,523,674,844,1114,1364,1748,2174,2738, 3354,4247,5139,6413,7813,9613,11630,14328,17169, 20958,25180,30497,36401,44025,52285,62834,74626, 89111,105374,125662] |