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A171294 Number of 1..20 integer arrays v[1..n] of length n with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..n-1 0
20, 400, 7978, 158720, 3167712, 63133961, 1257532904, 25067835333, 499409248793 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

column 20 of A171275.

LINKS

Table of n, a(n) for n=1..9.

CROSSREFS

Sequence in context: A224386 A189198 A224019 * A267793 A009964 A285874

Adjacent sequences:  A171291 A171292 A171293 * A171295 A171296 A171297

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 06 2009

STATUS

approved

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Last modified November 17 03:06 EST 2019. Contains 329216 sequences. (Running on oeis4.)