n | a(n) |
---|---|
0 | 1 |
1 | 73 |
2 | 1135 |
3 | 7831 |
4 | 34147 |
5 | 111835 |
6 | 301645 |
7 | 707365 |
8 | 1492669 |
9 | 2900773 |
10 | 5276899 |
11 | 9093547 |
12 | 14978575 |
13 | 23746087 |
14 | 36430129 |
15 | 54321193 |
16 | 79005529 |
17 | 112407265 |
18 | 156833335 |
19 | 215021215 |
20 | 290189467 |
21 | 386091091 |
[1,73,1135,7831,34147,111835,301645,707365, 1492669,2900773,5276899,9093547,14978575,23746087, 36430129,54321193,79005529,112407265,156833335, 215021215,290189467,386091091] |