34548

Appears in sequences

• Let u(1)=u(2)=1, u(3)=2n, u(k) = abs(u(k-1)-u(k-2)-u(k-3)) and M(k) = Max_{i<=i<=k} u(i), then for any k >= A078109(n), M(k) = floor(sqrt(k + a(n))).at n=28A078108
• G.f.: (2*x+4*x^2+4*x^3+4*x^4+2*x^5)/((1-x)^2*(1-x^2)^3*(1-x^3)^4*(1-x^4)).at n=15A127790
• Number of permutations of 0..n-1 v[1..n] with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..n-1.at n=7A171338