n | a(n) |
---|---|
1 | 15 |
2 | 142 |
3 | 1238 |
4 | 9075 |
5 | 54376 |
6 | 271846 |
7 | 1165921 |
8 | 4396009 |
9 | 14863460 |
10 | 45791493 |
11 | 130210765 |
12 | 345350438 |
13 | 861722537 |
14 | 2037396931 |
15 | 4591832266 |
16 | 9915068062 |
17 | 20600380173 |
18 | 41336047432 |
19 | 80360448168 |
20 | 151781791285 |
21 | 279198974102 |
[15,142,1238,9075,54376,271846,1165921,4396009, 14863460,45791493,130210765,345350438,861722537, 2037396931,4591832266,9915068062,20600380173, 41336047432,80360448168,151781791285,279198974102] |