42317

Appears in sequences

• T(n,m) = number of 1..m 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=60A171275
• Number of 1..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=5A171280
• Number of 1..n 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=5A171343
• E.g.f. satisfies: A(x) * log(A(x)) = exp(x*A(x)) - 1.at n=7A349588
• a(n) = (1/5) * Sum_{k=0..n-1} binomial(5*n,5*k+1).at n=4A387743
• Triangle read by rows: numerators of the almost-Riordan array ( (3*x - 2 - 2*sqrt(1 - x))/(-x^2 + 5*x - 2 + 2*(x - 1)*sqrt(1 - x)) | 4/(2*(1 - x)*sqrt(1 - x) + x^2 - 5*x + 2), (8 - 4*x - 8*sqrt(1 - x))/x ).at n=47A389710