The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 5 |
| 6 | 4 |
| 7 | 1 |
| 8 | 9 |
| 9 | 18 |
| 10 | 8 |
| 11 | 1 |
| 12 | 14 |
| 13 | 50 |
| 14 | 56 |
| 15 | 16 |
| 16 | 1 |
| 17 | 20 |
| 18 | 110 |
| 19 | 220 |
| 20 | 160 |
| 21 | 32 |
| 22 | 1 |
| 23 | 27 |
| 24 | 210 |
| 25 | 645 |
| 26 | 840 |
| 27 | 432 |
| 28 | 64 |
| 29 | 1 |
| 30 | 35 |
| 31 | 364 |
| 32 | 1575 |
| 33 | 3150 |
| 34 | 2912 |
| 35 | 1120 |
| 36 | 128 |
| 37 | 1 |
| 38 | 44 |
| 39 | 588 |
| 40 | 3388 |
| 41 | 9534 |
| 42 | 13552 |
| 43 | 9408 |
| 44 | 2816 |
| 45 | 256 |
| 46 | 1 |
| 47 | 54 |
| 48 | 900 |
| 49 | 6636 |
| 50 | 24822 |
| 51 | 49644 |
| 52 | 53088 |
| 53 | 28800 |
| 54 | 6912 |
| 55 | 512 |
| 56 | 1 |
| 57 | 65 |
| 58 | 1320 |
| 59 | 12090 |
| 60 | 57750 |
| 61 | 153426 |
| 62 | 231000 |
| 63 | 193440 |
| 64 | 84480 |
| 65 | 16640 |
| 66 | 1024 |
[1,1,2,1,5,4,1,9,18,8,1,14,50,56,16,1,20,110,220, 160,32,1,27,210,645,840,432,64,1,35,364,1575,3150, 2912,1120,128,1,44,588,3388,9534,13552,9408,2816, 256,1,54,900,6636,24822,49644,53088,28800,6912, 512,1,65,1320,12090,57750,153426,231000,193440, 84480,16640,1024] |