The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 4 |
| 5 | 1 |
| 6 | 0 |
| 7 | 9 |
| 8 | 4 |
| 9 | 1 |
| 10 | 0 |
| 11 | 16 |
| 12 | 9 |
| 13 | 4 |
| 14 | 1 |
| 15 | 0 |
| 16 | 25 |
| 17 | 16 |
| 18 | 9 |
| 19 | 4 |
| 20 | 1 |
| 21 | 0 |
| 22 | 36 |
| 23 | 25 |
| 24 | 16 |
| 25 | 9 |
| 26 | 4 |
| 27 | 1 |
| 28 | 0 |
| 29 | 49 |
| 30 | 36 |
| 31 | 25 |
| 32 | 16 |
| 33 | 9 |
| 34 | 4 |
| 35 | 1 |
| 36 | 0 |
| 37 | 64 |
| 38 | 49 |
| 39 | 36 |
| 40 | 25 |
| 41 | 16 |
| 42 | 9 |
| 43 | 4 |
| 44 | 1 |
| 45 | 0 |
| 46 | 81 |
| 47 | 64 |
| 48 | 49 |
| 49 | 36 |
| 50 | 25 |
| 51 | 16 |
| 52 | 9 |
| 53 | 4 |
| 54 | 1 |
| 55 | 0 |
| 56 | 100 |
| 57 | 81 |
| 58 | 64 |
| 59 | 49 |
| 60 | 36 |
| 61 | 25 |
| 62 | 16 |
| 63 | 9 |
| 64 | 4 |
| 65 | 1 |
| 66 | 0 |
| 67 | 121 |
| 68 | 100 |
| 69 | 81 |
| 70 | 64 |
| 71 | 49 |
| 72 | 36 |
| 73 | 25 |
| 74 | 16 |
| 75 | 9 |
| 76 | 4 |
| 77 | 1 |
| 78 | 0 |
| 79 | 144 |
| 80 | 121 |
| 81 | 100 |
| 82 | 81 |
[0,1,0,4,1,0,9,4,1,0,16,9,4,1,0,25,16,9,4,1,0,36, 25,16,9,4,1,0,49,36,25,16,9,4,1,0,64,49,36,25,16, 9,4,1,0,81,64,49,36,25,16,9,4,1,0,100,81,64,49,36, 25,16,9,4,1,0,121,100,81,64,49,36,25,16,9,4,1,0, 144,121,100,81] |