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 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 2 |
| 12 | 2 |
| 13 | 2 |
| 14 | 2 |
| 15 | 2 |
| 16 | 2 |
| 17 | 2 |
| 18 | 8 |
| 19 | 8 |
| 20 | 14 |
| 21 | 14 |
| 22 | 20 |
| 23 | 20 |
| 24 | 26 |
| 25 | 26 |
| 26 | 56 |
| 27 | 56 |
| 28 | 86 |
| 29 | 110 |
| 30 | 140 |
| 31 | 164 |
| 32 | 218 |
| 33 | 242 |
| 34 | 296 |
| 35 | 464 |
| 36 | 518 |
| 37 | 686 |
| 38 | 884 |
| 39 | 1172 |
| 40 | 1370 |
| 41 | 1802 |
| 42 | 2120 |
| 43 | 2672 |
| 44 | 3134 |
| 45 | 4526 |
| 46 | 5108 |
| 47 | 6764 |
| 48 | 8186 |
| 49 | 10682 |
| 50 | 13088 |
| 51 | 16544 |
| 52 | 19790 |
| 53 | 24950 |
| 54 | 29876 |
| 55 | 36716 |
[0,0,0,0,0,1,0,0,0,0,0,2,2,2,2,2,2,2,8,8,14,14,20, 20,26,26,56,56,86,110,140,164,218,242,296,464,518, 686,884,1172,1370,1802,2120,2672,3134,4526,5108, 6764,8186,10682,13088,16544,19790,24950,29876, 36716] |