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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 1 |
| 7 | 3 |
| 8 | 6 |
| 9 | 0 |
| 10 | 1 |
| 11 | 4 |
| 12 | 12 |
| 13 | 16 |
| 14 | 16 |
| 15 | 1 |
| 16 | 5 |
| 17 | 20 |
| 18 | 50 |
| 19 | 90 |
| 20 | 80 |
| 21 | 1 |
| 22 | 6 |
| 23 | 30 |
| 24 | 108 |
| 25 | 300 |
| 26 | 552 |
| 27 | 516 |
| 28 | 1 |
| 29 | 7 |
| 30 | 42 |
| 31 | 196 |
| 32 | 742 |
| 33 | 2100 |
| 34 | 3990 |
| 35 | 3794 |
| 36 | 1 |
| 37 | 8 |
| 38 | 56 |
| 39 | 320 |
| 40 | 1536 |
| 41 | 5888 |
| 42 | 16976 |
| 43 | 32656 |
| 44 | 31456 |
| 45 | 1 |
| 46 | 9 |
| 47 | 72 |
| 48 | 486 |
| 49 | 2826 |
| 50 | 13680 |
| 51 | 53046 |
| 52 | 154350 |
| 53 | 299628 |
| 54 | 290970 |
| 55 | 1 |
| 56 | 10 |
| 57 | 90 |
| 58 | 700 |
| 59 | 4780 |
| 60 | 27960 |
| 61 | 136380 |
| 62 | 532340 |
| 63 | 1559040 |
| 64 | 3044900 |
| 65 | 2974380 |
[1,1,1,1,2,2,1,3,6,0,1,4,12,16,16,1,5,20,50,90,80, 1,6,30,108,300,552,516,1,7,42,196,742,2100,3990, 3794,1,8,56,320,1536,5888,16976,32656,31456,1,9, 72,486,2826,13680,53046,154350,299628,290970,1,10, 90,700,4780,27960,136380,532340,1559040,3044900, 2974380] |