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A171278
Number of 1..4 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
4, 16, 62, 240, 914, 3508, 13297, 50461, 191050, 722932, 2726415, 10295319, 38671908, 146751022, 550500089, 2073212701, 7808201806, 29400052201, 110000818929
OFFSET
1,1
COMMENTS
column 4 of A171275.
CROSSREFS
Sequence in context: A268429 A195339 A172025 * A227438 A206839 A244827
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 06 2009
STATUS
approved