8591154domain: NAppears in sequencesG.f.: 1/((1-x)*(1-x^2))^6.at n=22A038166Expansion of (1+15*x+15*x^2+x^3)/(1-x)^12.at n=11A059603Number of strings of numbers x(i=1..7) in 0..n with sum i*x(i) equal to n*7.at n=26A184707