Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 7 |
3 | 28 |
4 | 109 |
5 | 487 |
6 | 2233 |
7 | 10666 |
8 | 52111 |
9 | 259957 |
10 | 1317331 |
11 | 6765121 |
12 | 35126623 |
13 | 184109599 |
14 | 972775495 |
15 | 5175914824 |
16 | 27709135453 |
17 | 149145574915 |
18 | 806659265809 |
19 | 4381711637563 |
20 | 23893807660885 |
21 | 130754073218149 |
22 | 717819706182061 |
[1,4,7,28,109,487,2233,10666,52111,259957,1317331, 6765121,35126623,184109599,972775495,5175914824, 27709135453,149145574915,806659265809, 4381711637563,23893807660885,130754073218149, 717819706182061] |