n | a(n) |
---|---|
0 | 1 |
1 | -1 |
2 | -1 |
3 | -3 |
4 | -6 |
5 | -14 |
6 | -31 |
7 | -70 |
8 | -157 |
9 | -353 |
10 | -793 |
11 | -1782 |
12 | -4004 |
13 | -8997 |
14 | -20216 |
15 | -45425 |
16 | -102069 |
17 | -229347 |
18 | -515338 |
19 | -1157954 |
20 | -2601899 |
21 | -5846414 |
22 | -13136773 |
23 | -29518061 |
24 | -66326481 |
25 | -149034250 |
26 | -334876920 |
27 | -752461609 |
28 | -1690765888 |
29 | -3799116465 |
30 | -8536537209 |
[1,-1,-1,-3,-6,-14,-31,-70,-157,-353,-793,-1782, -4004,-8997,-20216,-45425,-102069,-229347,-515338, -1157954,-2601899,-5846414,-13136773,-29518061, -66326481,-149034250,-334876920,-752461609, -1690765888,-3799116465,-8536537209] |