A171309 Number of 0..3 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

4, 15, 53, 138, 483, 1678, 5634, 18915, 62325, 204315, 683210, 2277118, 7559559, 25132611, 83206528, 274465209, 907716605, 3004041236, 9908081432

Offset

1,1

Comments

column 4 of A171307.

Links

Table of n, a(n) for n=1..19.

Crossrefs

Sequence in context: A057332 A230623 A162978 * A210781 A367818 A303271

Adjacent sequences: A171306 A171307 A171308 * A171310 A171311 A171312

Keyword

nonn

Author

R. H. Hardin Dec 06 2009

Status

approved