n | a(n) |
---|---|
1 | 4 |
2 | 16 |
3 | 53 |
4 | 155 |
5 | 418 |
6 | 1066 |
7 | 2611 |
8 | 6205 |
9 | 14408 |
10 | 32852 |
11 | 73825 |
12 | 163951 |
13 | 360574 |
14 | 786574 |
15 | 1704095 |
16 | 3670193 |
17 | 7864516 |
18 | 16777432 |
19 | 35651821 |
20 | 75497731 |
21 | 159383834 |
22 | 335544626 |
23 | 704643403 |
24 | 1476395365 |
25 | 3087008128 |
26 | 6442451356 |
27 | 13421773241 |
28 | 27917287895 |
[4,16,53,155,418,1066,2611,6205,14408,32852,73825, 163951,360574,786574,1704095,3670193,7864516, 16777432,35651821,75497731,159383834,335544626, 704643403,1476395365,3087008128,6442451356, 13421773241,27917287895] |