n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 6 |
4 | 28 |
5 | 145 |
6 | 876 |
7 | 6139 |
8 | 49120 |
9 | 442089 |
10 | 4420900 |
11 | 48629911 |
12 | 583558944 |
13 | 7586266285 |
14 | 106207728004 |
15 | 1593115920075 |
16 | 25489854721216 |
17 | 433327530260689 |
18 | 7799895544692420 |
19 | 148198015349155999 |
20 | 2963960306983120000 |
21 | 62243166446645520021 |
22 | 1369349661826201440484 |
23 | 31495042222002633131155 |
24 | 755881013328063195147744 |
[0,1,6,28,145,876,6139,49120,442089,4420900, 48629911,583558944,7586266285,106207728004, 1593115920075,25489854721216,433327530260689, 7799895544692420,148198015349155999, 2963960306983120000,62243166446645520021, 1369349661826201440484,31495042222002633131155, 755881013328063195147744] |