Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 22 |
3 | 214 |
4 | 1509 |
5 | 12770 |
6 | 107884 |
7 | 874365 |
8 | 6834843 |
9 | 56722759 |
10 | 463069914 |
11 | 3666488610 |
12 | 29512199193 |
13 | 233492075573 |
14 | 1858649112464 |
15 | 14890457067926 |
16 | 117154630898329 |
17 | 917101099859767 |
18 | 7257072314543086 |
19 | 56653800922475280 |
20 | 442687465112658972 |
21 | 3467083846726752495 |
[1,4,22,214,1509,12770,107884,874365,6834843, 56722759,463069914,3666488610,29512199193, 233492075573,1858649112464,14890457067926, 117154630898329,917101099859767,7257072314543086, 56653800922475280,442687465112658972, 3467083846726752495] |