n | a(n) |
---|---|
2 | 1 |
3 | 0 |
4 | 3 |
5 | 6 |
6 | 10 |
7 | 23 |
8 | 50 |
9 | 99 |
10 | 200 |
11 | 404 |
12 | 805 |
13 | 1599 |
14 | 3166 |
15 | 6225 |
16 | 12223 |
17 | 23934 |
18 | 46713 |
19 | 90995 |
20 | 176935 |
21 | 343395 |
22 | 665474 |
23 | 1287918 |
24 | 2489467 |
25 | 4806805 |
26 | 9272272 |
27 | 17870317 |
28 | 34414163 |
29 | 66226890 |
30 | 127365537 |
31 | 244803475 |
32 | 470278815 |
33 | 902997083 |
34 | 1733124564 |
35 | 3325087228 |
36 | 6377076320 |
[1,0,3,6,10,23,50,99,200,404,805,1599,3166,6225, 12223,23934,46713,90995,176935,343395,665474, 1287918,2489467,4806805,9272272,17870317,34414163, 66226890,127365537,244803475,470278815,902997083, 1733124564,3325087228,6377076320] |