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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 4 |
| 6 | 4 |
| 7 | 1 |
| 8 | 1 |
| 9 | 9 |
| 10 | 25 |
| 11 | 25 |
| 12 | 9 |
| 13 | 1 |
| 14 | 1 |
| 15 | 17 |
| 16 | 97 |
| 17 | 221 |
| 18 | 221 |
| 19 | 97 |
| 20 | 17 |
| 21 | 1 |
| 22 | 1 |
| 23 | 29 |
| 24 | 291 |
| 25 | 1229 |
| 26 | 2476 |
| 27 | 2476 |
| 28 | 1229 |
| 29 | 291 |
| 30 | 29 |
| 31 | 1 |
| 32 | 1 |
| 33 | 47 |
| 34 | 760 |
| 35 | 5303 |
| 36 | 18415 |
| 37 | 33818 |
| 38 | 33818 |
| 39 | 18415 |
| 40 | 5303 |
| 41 | 760 |
| 42 | 47 |
| 43 | 1 |
| 44 | 1 |
| 45 | 74 |
| 46 | 1818 |
| 47 | 19481 |
| 48 | 106272 |
| 49 | 317902 |
| 50 | 544727 |
| 51 | 544727 |
| 52 | 317902 |
| 53 | 106272 |
| 54 | 19481 |
| 55 | 1818 |
| 56 | 74 |
| 57 | 1 |
[1,1,1,1,1,4,4,1,1,9,25,25,9,1,1,17,97,221,221,97, 17,1,1,29,291,1229,2476,2476,1229,291,29,1,1,47, 760,5303,18415,33818,33818,18415,5303,760,47,1,1, 74,1818,19481,106272,317902,544727,544727,317902, 106272,19481,1818,74,1] |