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 A183267 Number of singly defective permutations of 1..n+6 with exactly 4 maxima. 2
 4760, 199168, 4643712, 80506880, 1163431808, 14874150912, 174293203968, 1915121868800, 20041282099200, 201949448765440, 1975285587312640, 18866258297487360, 176760773333450752, 1630252849810636800, 14841729785246515200, 133664316735891701760, 1192882240528106127360 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A singly defective permutation omits one value and repeats another value. LINKS Andrew Howroyd, Table of n, a(n) for n = 1..200 EXAMPLE Some solutions for n=2 with 4 maxima: (7,5,3,6,1,5,2,8) (7,1,8,4,3,4,2,6) (6,3,7,2,8,3,5,4) (6,1,5,2,4,3,3,7). CROSSREFS Column 4 of A183270. Sequence in context: A083638 A237553 A250467 * A258231 A257763 A260293 Adjacent sequences:  A183264 A183265 A183266 * A183268 A183269 A183270 KEYWORD nonn AUTHOR R. H. Hardin, Jan 03 2011 EXTENSIONS Terms a(10) and beyond from Andrew Howroyd, May 12 2020 STATUS approved

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Last modified May 17 21:11 EDT 2021. Contains 343990 sequences. (Running on oeis4.)