n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 25 |
5 | 136 |
6 | 923 |
7 | 7557 |
8 | 72767 |
9 | 807896 |
10 | 10180274 |
11 | 143741731 |
12 | 2250285510 |
13 | 38715864581 |
14 | 726596076239 |
15 | 14780041925011 |
16 | 324070919795226 |
17 | 7622475922806634 |
18 | 191515981769983447 |
19 | 5120787153821434468 |
20 | 145222986971201544125 |
21 | 4355043425181710241819 |
22 | 137728970544635824065325 |
[1,2,6,25,136,923,7557,72767,807896,10180274, 143741731,2250285510,38715864581,726596076239, 14780041925011,324070919795226,7622475922806634, 191515981769983447,5120787153821434468, 145222986971201544125,4355043425181710241819, 137728970544635824065325] |