n | a(n) |
---|---|
1 | 0 |
2 | 4 |
3 | 11 |
4 | 31 |
5 | 70 |
6 | 150 |
7 | 302 |
8 | 588 |
9 | 1113 |
10 | 2065 |
11 | 3770 |
12 | 6796 |
13 | 12124 |
14 | 21444 |
15 | 37655 |
16 | 65715 |
17 | 114078 |
18 | 197122 |
19 | 339242 |
20 | 581740 |
21 | 994405 |
22 | 1694949 |
23 | 2881586 |
24 | 4887576 |
25 | 8272440 |
26 | 13974340 |
27 | 23564387 |
28 | 39670663 |
29 | 66684598 |
30 | 111936750 |
[0,4,11,31,70,150,302,588,1113,2065,3770,6796, 12124,21444,37655,65715,114078,197122,339242, 581740,994405,1694949,2881586,4887576,8272440, 13974340,23564387,39670663,66684598,111936750] |