n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 8 |
4 | 49 |
5 | 284 |
6 | 1658 |
7 | 9974 |
8 | 62375 |
9 | 406832 |
10 | 2769493 |
11 | 19668054 |
12 | 145559632 |
13 | 1121153604 |
14 | 8974604065 |
15 | 74553168520 |
16 | 641808575961 |
17 | 5718014325296 |
18 | 52653303354906 |
19 | 500515404889978 |
20 | 4905937052293759 |
21 | 49530189989912312 |
22 | 514541524981377909 |
23 | 5494885265473192914 |
[0,1,8,49,284,1658,9974,62375,406832,2769493, 19668054,145559632,1121153604,8974604065, 74553168520,641808575961,5718014325296, 52653303354906,500515404889978,4905937052293759, 49530189989912312,514541524981377909, 5494885265473192914] |