n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 10 |
4 | 25 |
5 | 137 |
6 | 346 |
7 | 1906 |
8 | 4817 |
9 | 26545 |
10 | 67090 |
11 | 369722 |
12 | 934441 |
13 | 5149561 |
14 | 13015082 |
15 | 71724130 |
16 | 181276705 |
17 | 998988257 |
18 | 2524858786 |
19 | 13914111466 |
20 | 35166746297 |
21 | 193798572265 |
22 | 489809589370 |
23 | 2699265900242 |
24 | 6822167504881 |
25 | 37595924031121 |
26 | 95020535478962 |
[1,2,10,25,137,346,1906,4817,26545,67090,369722, 934441,5149561,13015082,71724130,181276705, 998988257,2524858786,13914111466,35166746297, 193798572265,489809589370,2699265900242, 6822167504881,37595924031121,95020535478962] |