n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 12 |
4 | 26 |
5 | 60 |
6 | 144 |
7 | 324 |
8 | 728 |
9 | 1602 |
10 | 3576 |
11 | 7808 |
12 | 17068 |
13 | 36908 |
14 | 79520 |
15 | 170704 |
16 | 364794 |
17 | 777036 |
18 | 1649456 |
19 | 3491188 |
20 | 7367544 |
21 | 15513336 |
22 | 32584648 |
23 | 68307264 |
24 | 142904080 |
25 | 298448914 |
26 | 622235060 |
27 | 1295320004 |
28 | 2692583916 |
29 | 5589586996 |
30 | 11588905844 |
31 | 23999052692 |
[1,2,4,12,26,60,144,324,728,1602,3576,7808,17068, 36908,79520,170704,364794,777036,1649456,3491188, 7367544,15513336,32584648,68307264,142904080, 298448914,622235060,1295320004,2692583916, 5589586996,11588905844,23999052692] |