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A174073 Number of permutations of length n without modular consecutive triples i,i+2,i+4. 4
100, 594, 4389, 35744, 325395 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,1

LINKS

Table of n, a(n) for n=5..9.

EXAMPLE

For example, a(5) does not count the permutation (0,4,1,3,2) since 4,1,3 is an arithmetic progression of 2 mod(5).

CROSSREFS

Cf. A165960, A174072, A174074, A174075.

Sequence in context: A250700 A250846 A172518 * A231759 A231046 A250707

Adjacent sequences:  A174070 A174071 A174072 * A174074 A174075 A174076

KEYWORD

nonn

AUTHOR

Isaac Lambert, Mar 06 2010

STATUS

approved

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Last modified August 6 19:52 EDT 2020. Contains 336256 sequences. (Running on oeis4.)