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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 3 |
| 5 | 14 |
| 6 | 5 |
| 7 | 30 |
| 8 | 7 |
| 9 | 52 |
| 10 | 9 |
| 11 | 80 |
| 12 | 11 |
| 13 | 114 |
| 14 | 13 |
| 15 | 154 |
| 16 | 15 |
| 17 | 200 |
| 18 | 17 |
| 19 | 252 |
| 20 | 19 |
| 21 | 310 |
| 22 | 21 |
| 23 | 374 |
| 24 | 23 |
| 25 | 444 |
| 26 | 25 |
| 27 | 520 |
| 28 | 27 |
| 29 | 602 |
| 30 | 29 |
| 31 | 690 |
| 32 | 31 |
| 33 | 784 |
| 34 | 33 |
| 35 | 884 |
| 36 | 35 |
| 37 | 990 |
| 38 | 37 |
| 39 | 1102 |
| 40 | 39 |
| 41 | 1220 |
| 42 | 41 |
| 43 | 1344 |
| 44 | 43 |
| 45 | 1474 |
| 46 | 45 |
| 47 | 1610 |
| 48 | 47 |
| 49 | 1752 |
| 50 | 49 |
| 51 | 1900 |
| 52 | 51 |
| 53 | 2054 |
| 54 | 53 |
| 55 | 2214 |
| 56 | 55 |
| 57 | 2380 |
| 58 | 57 |
| 59 | 2552 |
| 60 | 59 |
| 61 | 2730 |
[0,1,4,3,14,5,30,7,52,9,80,11,114,13,154,15,200, 17,252,19,310,21,374,23,444,25,520,27,602,29,690, 31,784,33,884,35,990,37,1102,39,1220,41,1344,43, 1474,45,1610,47,1752,49,1900,51,2054,53,2214,55, 2380,57,2552,59,2730] |