Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 4 |
2 | 23 |
3 | 117 |
4 | 586 |
5 | 2930 |
6 | 14649 |
7 | 73243 |
8 | 366212 |
9 | 1831056 |
10 | 9155275 |
11 | 45776369 |
12 | 228881838 |
13 | 1144409182 |
14 | 5722045901 |
15 | 28610229495 |
16 | 143051147464 |
17 | 715255737308 |
18 | 3576278686527 |
19 | 17881393432621 |
20 | 89406967163090 |
21 | 447034835815434 |
22 | 2235174179077153 |
23 | 11175870895385747 |
[4,23,117,586,2930,14649,73243,366212,1831056, 9155275,45776369,228881838,1144409182,5722045901, 28610229495,143051147464,715255737308, 3576278686527,17881393432621,89406967163090, 447034835815434,2235174179077153, 11175870895385747] |