n | a(n) |
---|---|
0 | 3 |
1 | 8 |
2 | 21 |
3 | 54 |
4 | 140 |
5 | 365 |
6 | 954 |
7 | 2496 |
8 | 6533 |
9 | 17102 |
10 | 44772 |
11 | 117213 |
12 | 306866 |
13 | 803384 |
14 | 2103285 |
15 | 5506470 |
16 | 14416124 |
17 | 37741901 |
18 | 98809578 |
19 | 258686832 |
20 | 677250917 |
21 | 1773065918 |
22 | 4641946836 |
23 | 12152774589 |
24 | 31816376930 |
25 | 83296356200 |
26 | 218072691669 |
27 | 570921718806 |
28 | 1494692464748 |
29 | 3913155675437 |
[3,8,21,54,140,365,954,2496,6533,17102,44772, 117213,306866,803384,2103285,5506470,14416124, 37741901,98809578,258686832,677250917,1773065918, 4641946836,12152774589,31816376930,83296356200, 218072691669,570921718806,1494692464748, 3913155675437] |