Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
2 | 1 |
3 | 4 |
4 | 18 |
5 | 68 |
6 | 251 |
7 | 888 |
8 | 3076 |
9 | 10456 |
10 | 35061 |
11 | 116252 |
12 | 381974 |
13 | 1245564 |
14 | 4035631 |
15 | 13003696 |
16 | 41701512 |
17 | 133175792 |
18 | 423741161 |
19 | 1343864820 |
20 | 4249518490 |
21 | 13402327540 |
22 | 42168298851 |
23 | 132388845224 |
24 | 414818381708 |
25 | 1297410683208 |
26 | 4051098663901 |
27 | 12629895834508 |
28 | 39319487031966 |
29 | 122247859681196 |
[1,4,18,68,251,888,3076,10456,35061,116252,381974, 1245564,4035631,13003696,41701512,133175792, 423741161,1343864820,4249518490,13402327540, 42168298851,132388845224,414818381708, 1297410683208,4051098663901,12629895834508, 39319487031966,122247859681196] |