A224297 Number of permutations of length n containing exactly 1 occurrence of 12345 and 1 occurrence of 12354.
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
Keywords
Links
- B. Nakamura, Approaches for enumerating permutations with a prescribed number of occurrences of patterns, arXiv 1301.5080, 2013.
Programs
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Maple
# Programs can be obtained from author's personal website.