n | a(n) |
---|---|
0 | 1 |
1 | 10 |
2 | 65 |
3 | 340 |
4 | 1550 |
5 | 6412 |
6 | 24650 |
7 | 89440 |
8 | 309605 |
9 | 1030490 |
10 | 3317445 |
11 | 10377180 |
12 | 31655820 |
13 | 94451520 |
14 | 276313200 |
15 | 794169792 |
16 | 2246410560 |
17 | 6262748160 |
18 | 17230138880 |
19 | 46831339520 |
20 | 125870737408 |
21 | 334826700800 |
22 | 882159984640 |
23 | 2303540756480 |
24 | 5965195018240 |
25 | 15327324667904 |
[1,10,65,340,1550,6412,24650,89440,309605,1030490, 3317445,10377180,31655820,94451520,276313200, 794169792,2246410560,6262748160,17230138880, 46831339520,125870737408,334826700800, 882159984640,2303540756480,5965195018240, 15327324667904] |