The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 2 |
| 5 | 0 |
| 6 | 4 |
| 7 | 0 |
| 8 | 4 |
| 9 | 4 |
| 10 | 9 |
| 11 | 0 |
| 12 | 10 |
| 13 | 0 |
| 14 | 10 |
| 15 | 4 |
| 16 | 18 |
| 17 | 0 |
| 18 | 16 |
| 19 | 0 |
| 20 | 20 |
| 21 | 0 |
| 22 | 20 |
| 23 | 4 |
| 24 | 20 |
| 25 | 16 |
| 26 | 29 |
| 27 | 0 |
| 28 | 26 |
| 29 | 0 |
| 30 | 34 |
| 31 | 0 |
| 32 | 34 |
| 33 | 4 |
| 34 | 26 |
| 35 | 20 |
| 36 | 41 |
| 37 | 0 |
| 38 | 40 |
| 39 | 0 |
| 40 | 40 |
| 41 | 4 |
| 42 | 34 |
| 43 | 72 |
| 44 | 0 |
| 45 | 45 |
| 46 | 0 |
| 47 | 45 |
| 48 | 4 |
| 49 | 45 |
| 50 | 16 |
| 51 | 40 |
| 52 | 53 |
| 53 | 0 |
| 54 | 50 |
| 55 | 0 |
| 56 | 61 |
| 57 | 0 |
| 58 | 65 |
| 59 | 0 |
| 60 | 65 |
| 61 | 4 |
| 62 | 65 |
| 63 | 16 |
| 64 | 85 |
| 65 | 0 |
| 66 | 68 |
| 67 | 0 |
| 68 | 68 |
| 69 | 4 |
| 70 | 65 |
| 71 | 72 |
| 72 | 4 |
| 73 | 73 |
| 74 | 0 |
| 75 | 89 |
| 76 | 0 |
| 77 | 89 |
| 78 | 4 |
| 79 | 73 |
| 80 | 36 |
| 81 | 0 |
| 82 | 130 |
| 83 | 0 |
[0,0,1,0,2,0,4,0,4,4,9,0,10,0,10,4,18,0,16,0,20,0, 20,4,20,16,29,0,26,0,34,0,34,4,26,20,41,0,40,0,40, 4,34,72,0,45,0,45,4,45,16,40,53,0,50,0,61,0,65,0, 65,4,65,16,85,0,68,0,68,4,65,72,4,73,0,89,0,89,4, 73,36,0,130,0] |