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 | 1 |
| 3 | 1 |
| 4 | 0 |
| 5 | 1 |
| 6 | 1 |
| 7 | 4 |
| 8 | 3 |
| 9 | 4 |
| 10 | 7 |
| 11 | 12 |
| 12 | 19 |
| 13 | 22 |
| 14 | 32 |
| 15 | 53 |
| 16 | 80 |
| 17 | 120 |
| 18 | 160 |
| 19 | 245 |
| 20 | 368 |
| 21 | 553 |
| 22 | 800 |
| 23 | 1164 |
| 24 | 1736 |
| 25 | 2588 |
| 26 | 3813 |
| 27 | 5598 |
| 28 | 8226 |
| 29 | 12228 |
| 30 | 18060 |
| 31 | 26657 |
| 32 | 39221 |
| 33 | 57945 |
| 34 | 85656 |
| 35 | 126506 |
| 36 | 186584 |
| 37 | 275307 |
| 38 | 406514 |
| 39 | 600488 |
| 40 | 886255 |
| 41 | 1308088 |
| 42 | 1930648 |
| 43 | 2850861 |
| 44 | 4208743 |
| 45 | 6212824 |
| 46 | 9170440 |
| 47 | 13538025 |
[0,0,1,1,0,1,1,4,3,4,7,12,19,22,32,53,80,120,160, 245,368,553,800,1164,1736,2588,3813,5598,8226, 12228,18060,26657,39221,57945,85656,126506,186584, 275307,406514,600488,886255,1308088,1930648, 2850861,4208743,6212824,9170440,13538025] |