87237

Appears in sequences

• Number of 0..6 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.at n=5A171312
• Number of 0..n-1 integer arrays v[1..6] of length 6 with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..5.at n=6A171357
• Number of length 3+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.at n=27A250322
• Number of (not necessarily maximal) cliques in the n X n white bishop graph.at n=13A295910
• a(n) is the number of 5 element sets of distinct integer-sided trapezoids whose base angles are 60 degrees that fill an equilateral triangular grid of side n units, where one trapezoid has a larger base of n units.at n=37A391453