n | a(n) |
---|---|
2 | 1 |
3 | 1 |
4 | 2 |
5 | 4 |
6 | 14 |
7 | 49 |
8 | 216 |
9 | 984 |
10 | 4862 |
11 | 24739 |
12 | 130338 |
13 | 701584 |
14 | 3852744 |
15 | 21489836 |
16 | 121525520 |
17 | 695307888 |
18 | 4019381790 |
19 | 23446201495 |
20 | 137875564710 |
21 | 816646459860 |
22 | 4868578092510 |
23 | 29196022525905 |
24 | 176022392938080 |
25 | 1066433501134560 |
26 | 6490009570139784 |
27 | 39659537885087124 |
28 | 243278423033093336 |
29 | 1497584057249141728 |
30 | 9249144367260811824 |
[1,1,2,4,14,49,216,984,4862,24739,130338,701584, 3852744,21489836,121525520,695307888,4019381790, 23446201495,137875564710,816646459860, 4868578092510,29196022525905,176022392938080, 1066433501134560,6490009570139784, 39659537885087124,243278423033093336, 1497584057249141728,9249144367260811824] |