n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 16 |
4 | 79 |
5 | 319 |
6 | 1576 |
7 | 6364 |
8 | 31441 |
9 | 126961 |
10 | 627244 |
11 | 2532856 |
12 | 12513439 |
13 | 50530159 |
14 | 249641536 |
15 | 1008070324 |
16 | 4980317281 |
17 | 20110876321 |
18 | 99356704084 |
19 | 401209456096 |
20 | 1982153764399 |
21 | 8004078245599 |
22 | 39543718583896 |
23 | 159680355455884 |
24 | 788892217913521 |
[1,4,16,79,319,1576,6364,31441,126961,627244, 2532856,12513439,50530159,249641536,1008070324, 4980317281,20110876321,99356704084,401209456096, 1982153764399,8004078245599,39543718583896, 159680355455884,788892217913521] |