login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A171289 Number of 1..15 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
15, 225, 3360, 49986, 747245, 11142675, 165997846, 2475696187, 36893238627, 549715326612 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

column 15 of A171275.

LINKS

Table of n, a(n) for n=1..10.

CROSSREFS

Sequence in context: A224349 A224008 A012852 * A262336 A189906 A189900

Adjacent sequences:  A171286 A171287 A171288 * A171290 A171291 A171292

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 06 2009

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 6 13:45 EST 2021. Contains 349563 sequences. (Running on oeis4.)