Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 26 |
5 | 69 |
6 | 186 |
7 | 554 |
8 | 1606 |
9 | 4772 |
10 | 14825 |
11 | 45920 |
12 | 143586 |
13 | 455561 |
14 | 1446777 |
15 | 4622609 |
16 | 14885492 |
17 | 48099814 |
18 | 156175165 |
19 | 509527438 |
20 | 1667502213 |
21 | 5475430124 |
22 | 18036181574 |
23 | 59562083008 |
24 | 197197284543 |
25 | 654439115129 |
26 | 2176448986396 |
27 | 7252784407286 |
28 | 24214655260997 |
[1,1,3,8,26,69,186,554,1606,4772,14825,45920, 143586,455561,1446777,4622609,14885492,48099814, 156175165,509527438,1667502213,5475430124, 18036181574,59562083008,197197284543,654439115129, 2176448986396,7252784407286,24214655260997] |