72246816227domain: NAppears in sequencesExpansion of (1+2*x)/(1-6*x+x^2).at n=14A054488Combined Diophantine Chebyshev sequences A054488 and A077413.at n=28A077241a(2n) = -A106328(n), a(2n+1) = A054488(n).at n=29A108931