n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 21 |
3 | 56 |
4 | 126 |
5 | 252 |
6 | 461 |
7 | 780 |
8 | 1209 |
9 | 1638 |
10 | 1638 |
11 | 0 |
12 | -6187 |
13 | -23238 |
14 | -63783 |
15 | -151316 |
16 | -326382 |
17 | -652764 |
18 | -1217483 |
19 | -2107560 |
20 | -3322995 |
21 | -4538430 |
22 | -4538430 |
23 | 0 |
24 | 16942381 |
25 | 63239286 |
26 | 172791861 |
27 | 408855776 |
28 | 880983606 |
29 | 1761967212 |
30 | 3287837741 |
31 | 5694626340 |
[1,6,21,56,126,252,461,780,1209,1638,1638,0,-6187, -23238,-63783,-151316,-326382,-652764,-1217483, -2107560,-3322995,-4538430,-4538430,0,16942381, 63239286,172791861,408855776,880983606,1761967212, 3287837741,5694626340] |