Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 3 |
5 | 21 |
6 | 20 |
7 | 68 |
8 | 127 |
9 | 216 |
10 | 588 |
11 | 945 |
12 | 2310 |
13 | 4464 |
14 | 9065 |
15 | 19731 |
16 | 38039 |
17 | 82599 |
18 | 165226 |
19 | 342520 |
20 | 711496 |
21 | 1442555 |
22 | 3015297 |
23 | 6145475 |
24 | 12711995 |
25 | 26183208 |
26 | 53750956 |
27 | 111108083 |
28 | 228062512 |
29 | 470499012 |
30 | 968320551 |
31 | 1993099704 |
[1,1,2,5,3,21,20,68,127,216,588,945,2310,4464, 9065,19731,38039,82599,165226,342520,711496, 1442555,3015297,6145475,12711995,26183208, 53750956,111108083,228062512,470499012,968320551, 1993099704] |