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A171341 Number of 1..n integer arrays v[1..4] of length 4 with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..3 0
1, 15, 74, 240, 597, 1235, 2318, 3978, 6399, 9781, 14388, 20364, 28141, 37907, 49986, 64790, 82711, 103983, 129254, 158720, 193017, 232639, 278134, 329748, 388427, 454593, 528832, 611758, 704263, 806483, 919866, 1044640 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

row 4 of A171275.

LINKS

Table of n, a(n) for n=1..32.

CROSSREFS

Sequence in context: A212562 A212092 A022817 * A080841 A022675 A214453

Adjacent sequences:  A171338 A171339 A171340 * A171342 A171343 A171344

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 06 2009

STATUS

approved

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Last modified August 14 08:08 EDT 2020. Contains 336480 sequences. (Running on oeis4.)