The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 5 |
| 5 | 1 |
| 6 | 1 |
| 7 | 17 |
| 8 | 17 |
| 9 | 1 |
| 10 | 1 |
| 11 | 51 |
| 12 | 148 |
| 13 | 51 |
| 14 | 1 |
| 15 | 1 |
| 16 | 147 |
| 17 | 992 |
| 18 | 992 |
| 19 | 147 |
| 20 | 1 |
| 21 | 1 |
| 22 | 421 |
| 23 | 5867 |
| 24 | 12982 |
| 25 | 5867 |
| 26 | 421 |
| 27 | 1 |
| 28 | 1 |
| 29 | 1213 |
| 30 | 32475 |
| 31 | 137671 |
| 32 | 137671 |
| 33 | 32475 |
| 34 | 1213 |
| 35 | 1 |
| 36 | 1 |
| 37 | 3527 |
| 38 | 173110 |
| 39 | 1286761 |
| 40 | 2415602 |
| 41 | 1286761 |
| 42 | 173110 |
| 43 | 3527 |
| 44 | 1 |
| 45 | 1 |
| 46 | 10343 |
| 47 | 902090 |
| 48 | 11081582 |
| 49 | 35361824 |
| 50 | 35361824 |
| 51 | 11081582 |
| 52 | 902090 |
| 53 | 10343 |
| 54 | 1 |
[1,1,1,1,5,1,1,17,17,1,1,51,148,51,1,1,147,992, 992,147,1,1,421,5867,12982,5867,421,1,1,1213, 32475,137671,137671,32475,1213,1,1,3527,173110, 1286761,2415602,1286761,173110,3527,1,1,10343, 902090,11081582,35361824,35361824,11081582,902090, 10343,1] |