n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 23 |
4 | 40 |
5 | 273 |
6 | 1870 |
7 | 7343 |
8 | 12816 |
9 | 87841 |
10 | 602070 |
11 | 2364359 |
12 | 4126648 |
13 | 28284465 |
14 | 193864606 |
15 | 761316191 |
16 | 1328767776 |
17 | 9107509825 |
18 | 62423800998 |
19 | 245141449079 |
20 | 427859097160 |
21 | 2932589879121 |
22 | 20100270056686 |
23 | 78934785287183 |
[1,6,23,40,273,1870,7343,12816,87841,602070, 2364359,4126648,28284465,193864606,761316191, 1328767776,9107509825,62423800998,245141449079, 427859097160,2932589879121,20100270056686, 78934785287183] |