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A323800
Number of permutations p of [n] such that max_{j=1..n} |p(j)-j| = 4.
2
0, 42, 274, 1227, 4833, 18827, 75693, 304900, 1212960, 4753020, 18410363, 70943107, 272701262, 1046410914, 4007815161, 15319362279, 58456445860, 222775782355, 848216866767, 3227396592600, 12273205919568, 46650941505906, 177252609519698, 673266690295879
OFFSET
4,2
LINKS
FORMULA
a(n) = A072856(n) - A002526(n).
CROSSREFS
Column k=4 of A130152.
Sequence in context: A300338 A064369 A234043 * A309925 A188058 A036463
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Jan 28 2019
STATUS
approved