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A171339 Number of permutations of 1..n v[1..n] with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..n-1 0
1, 2, 6, 22, 118, 656, 4586, 36656, 332050, 3326146, 36615032, 439501232, 5741754786, 80586187678 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..14.

CROSSREFS

Sequence in context: A111280 A095817 A101042 * A032266 A095856 A180367

Adjacent sequences:  A171336 A171337 A171338 * A171340 A171341 A171342

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 06 2009

STATUS

approved

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Last modified September 19 12:38 EDT 2020. Contains 337178 sequences. (Running on oeis4.)