n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 36 |
5 | 252 |
6 | 2278 |
7 | 25479 |
8 | 343318 |
9 | 5455963 |
10 | 100504720 |
11 | 2117265242 |
12 | 50438185262 |
13 | 1345840435641 |
14 | 39899564488618 |
15 | 1305139816260887 |
16 | 46817884128344164 |
17 | 1831903983379048308 |
18 | 77815287718736660334 |
19 | 3573159363560866942735 |
20 | 176687138080525842904446 |
21 | 9376097634171921557906827 |
[1,1,2,7,36,252,2278,25479,343318,5455963, 100504720,2117265242,50438185262,1345840435641, 39899564488618,1305139816260887,46817884128344164, 1831903983379048308,77815287718736660334, 3573159363560866942735,176687138080525842904446, 9376097634171921557906827] |