The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 26 |
| 4 | 107 |
| 5 | 455 |
| 6 | 1997 |
| 7 | 8960 |
| 8 | 40802 |
| 9 | 188190 |
| 10 | 876126 |
| 11 | 4110613 |
| 12 | 19409604 |
| 13 | 92128043 |
| 14 | 439257473 |
| 15 | 2102256709 |
| 16 | 10094370187 |
| 17 | 48608230113 |
| 18 | 234652253431 |
| 19 | 1135270546210 |
| 20 | 5503323842213 |
| 21 | 26724710156090 |
| 22 | 129982634911257 |
| 23 | 633105351011227 |
| 24 | 3087646339418001 |
| 25 | 15076130618030798 |
| 26 | 73691824779803129 |
[1,2,7,26,107,455,1997,8960,40802,188190,876126, 4110613,19409604,92128043,439257473,2102256709, 10094370187,48608230113,234652253431, 1135270546210,5503323842213,26724710156090, 129982634911257,633105351011227,3087646339418001, 15076130618030798,73691824779803129] |