Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 1 |
4 | 5 |
5 | 5 |
6 | 15 |
7 | 25 |
8 | 68 |
9 | 139 |
10 | 354 |
11 | 813 |
12 | 2047 |
13 | 4935 |
14 | 12421 |
15 | 30833 |
16 | 78102 |
17 | 197139 |
18 | 503132 |
19 | 1284711 |
20 | 3302155 |
21 | 8503965 |
22 | 21996761 |
23 | 57026957 |
24 | 148322398 |
25 | 386626825 |
26 | 1010375144 |
27 | 2645762431 |
28 | 6942725217 |
29 | 18251279163 |
30 | 48065184969 |
31 | 126783827201 |
[1,2,1,5,5,15,25,68,139,354,813,2047,4935,12421, 30833,78102,197139,503132,1284711,3302155,8503965, 21996761,57026957,148322398,386626825,1010375144, 2645762431,6942725217,18251279163,48065184969, 126783827201] |