A224295 -id:A224295 - cp's OEIS frontend

A224296 Number of permutations of length n avoiding 12345 and containing exactly 1 occurrence of 12354.

0, 0, 0, 0, 1, 18, 219, 2294, 22457, 212994, 1992364, 18553588, 172889838, 1616683912, 15193902185, 143632773054, 1366274116893, 13078787860290, 125984999505040, 1221032658065388, 11904323953163434, 116721427446951748, 1150690705785803998

Offset: 1

Brian Nakamura, Apr 03 2013

nonn

a(n) is also the number of permutations of length n avoiding 12354 and containing exactly 1 occurrence of 12345.

B. Nakamura, Approaches for enumerating permutations with a prescribed number of occurrences of patterns, arXiv 1301.5080, 2013.

Cf. A224295.

# Programs can be obtained from author's personal website.

A224297 Number of permutations of length n containing exactly 1 occurrence of 12345 and 1 occurrence of 12354.

Original entry on oeis.org

0, 0, 0, 0, 0, 0, 2, 56, 984, 14004, 177140, 2083560, 23374060, 254007320, 2700941710, 28293706782, 293369952474, 3020937207142, 30967869359950, 316581042622444, 3231631411510936, 32971319565628464, 336462340456201700

Offset: 1

Brian Nakamura, Apr 03 2013

nonn

B. Nakamura, Approaches for enumerating permutations with a prescribed number of occurrences of patterns, arXiv 1301.5080, 2013.

Cf. A224295, A224296.

# Programs can be obtained from author's personal website.

cp's OEIS Frontend

A224296 Number of permutations of length n avoiding 12345 and containing exactly 1 occurrence of 12354.

Views

Author

Keywords

Comments

Links

Crossrefs

Programs

Maple