n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 25 |
3 | 85 |
4 | 255 |
5 | 651 |
6 | 1519 |
7 | 3235 |
8 | 6470 |
9 | 12190 |
10 | 21942 |
11 | 37854 |
12 | 63090 |
13 | 101850 |
14 | 160050 |
15 | 245322 |
16 | 367983 |
17 | 541035 |
18 | 781495 |
19 | 1110395 |
20 | 1554553 |
21 | 2146573 |
22 | 2927145 |
23 | 3945045 |
24 | 5260060 |
25 | 6942988 |
26 | 9079292 |
27 | 11769100 |
28 | 15131700 |
29 | 19305540 |
[1,5,25,85,255,651,1519,3235,6470,12190,21942, 37854,63090,101850,160050,245322,367983,541035, 781495,1110395,1554553,2146573,2927145,3945045, 5260060,6942988,9079292,11769100,15131700, 19305540] |