n | a(n) |
---|---|
1 | 1 |
2 | 5 |
3 | 18 |
4 | 67 |
5 | 249 |
6 | 925 |
7 | 3437 |
8 | 12770 |
9 | 47447 |
10 | 176289 |
11 | 655001 |
12 | 2433653 |
13 | 9042226 |
14 | 33596347 |
15 | 124827065 |
16 | 463794357 |
17 | 1723225693 |
18 | 6402636738 |
19 | 23788965871 |
20 | 88387787777 |
21 | 328404398513 |
22 | 1220184956261 |
23 | 4533591310674 |
24 | 16844536614515 |
[1,5,18,67,249,925,3437,12770,47447,176289,655001, 2433653,9042226,33596347,124827065,463794357, 1723225693,6402636738,23788965871,88387787777, 328404398513,1220184956261,4533591310674, 16844536614515] |