|
|
A374550
|
|
Number of length n inversion sequences avoiding the patterns 120 and 201.
|
|
1
|
|
|
1, 1, 2, 6, 23, 102, 498, 2607, 14386, 82663, 490228, 2981407, 18507513, 116855873, 748427848, 4851982365, 31784721142, 210111119681, 1399977460914, 9393523464391, 63420812374620, 430570197000992, 2937789342516835, 20135022976572246, 138566149670814993
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,3
|
|
LINKS
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|