A264174 Number of permutations of [n] with exactly one occurrence of the consecutive pattern 1324.

1, 10, 86, 782, 7571, 78726, 882997, 10657118, 137977980, 1910131680, 28178987795, 441555002430, 7326966011380, 128386409972224, 2369404379818067, 45945570232645676, 934057289766619391, 19867567809865839562, 441307130768553551181, 10218971845916640741804

Offset

4,2

Links

Alois P. Heinz, Table of n, a(n) for n = 4..200

Example

a(4) = 1: 1324.
a(5) = 10: 12435, 13245, 13254, 14253, 14352, 21435, 24351, 31425, 41325, 51324.

Crossrefs

Column k=1 of A264173.

Sequence in context: A163412 A287827 A321853 * A218894 A251193 A198858

Adjacent sequences: A264171 A264172 A264173 * A264175 A264176 A264177

Keyword

nonn

Author

Alois P. Heinz, Nov 06 2015

Status

approved