n | a(n) |
---|---|
0 | 1 |
1 | 19 |
2 | 155 |
3 | 805 |
4 | 3136 |
5 | 9996 |
6 | 27468 |
7 | 67320 |
8 | 150645 |
9 | 313027 |
10 | 611611 |
11 | 1134497 |
12 | 2012920 |
13 | 3436720 |
14 | 5673648 |
15 | 9093096 |
16 | 14194881 |
17 | 21643755 |
18 | 32310355 |
19 | 47319349 |
20 | 68105576 |
21 | 96479020 |
22 | 134699500 |
23 | 185562000 |
24 | 252493605 |
25 | 339663051 |
26 | 452103939 |
[1,19,155,805,3136,9996,27468,67320,150645,313027, 611611,1134497,2012920,3436720,5673648,9093096, 14194881,21643755,32310355,47319349,68105576, 96479020,134699500,185562000,252493605,339663051, 452103939] |