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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 10 |
| 3 | 13 |
| 4 | 68 |
| 5 | 178 |
| 6 | 233 |
| 7 | 1220 |
| 8 | 3194 |
| 9 | 4181 |
| 10 | 21892 |
| 11 | 57314 |
| 12 | 75025 |
| 13 | 392836 |
| 14 | 1028458 |
| 15 | 1346269 |
| 16 | 7049156 |
| 17 | 18454930 |
| 18 | 24157817 |
| 19 | 126491972 |
| 20 | 331160282 |
| 21 | 433494437 |
| 22 | 2269806340 |
| 23 | 5942430146 |
| 24 | 7778742049 |
| 25 | 40730022148 |
| 26 | 106632582346 |
[1,4,10,13,68,178,233,1220,3194,4181,21892,57314, 75025,392836,1028458,1346269,7049156,18454930, 24157817,126491972,331160282,433494437,2269806340, 5942430146,7778742049,40730022148,106632582346] |