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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 3 |
| 3 | 15 |
| 4 | 21 |
| 5 | 66 |
| 6 | 78 |
| 7 | 1326 |
| 8 | 190 |
| 9 | 1035 |
| 10 | 435 |
| 11 | 465 |
| 12 | 17205 |
| 13 | 861 |
| 14 | 903 |
| 15 | 9870 |
| 16 | 5565 |
| 17 | 1567335 |
| 18 | 16836 |
| 19 | 20100 |
| 20 | 2556 |
| 21 | 2628 |
| 22 | 49770 |
| 23 | 55278 |
| 24 | 4005 |
| 25 | 42195 |
| 26 | 413595 |
| 27 | 47895 |
| 28 | 10100265 |
| 29 | 5995 |
| 30 | 1437360 |
| 31 | 32131 |
| 32 | 8646 |
| 33 | 1352190 |
| 34 | 19559385 |
| 35 | 54397665 |
| 36 | 1642578 |
| 37 | 12246 |
| 38 | 52975 |
| 39 | 501501 |
| 40 | 134940 |
| 41 | 336324807802305 |
[6,3,15,21,66,78,1326,190,1035,435,465,17205,861, 903,9870,5565,1567335,16836,20100,2556,2628,49770, 55278,4005,42195,413595,47895,10100265,5995, 1437360,32131,8646,1352190,19559385,54397665, 1642578,12246,52975,501501,134940,336324807802305] |