5845015domain: NAppears in sequencesa(n) = a(n-1) + a(n-3) + a(n-4), n >= 4, with initial terms 2,5,4,7.at n=31A111570Expansion of 1/(1 - x^3/(1-x)^7).at n=17A369806Expansion of 1/(1 - x^3*(1 + x)^4).at n=29A375318Expansion of 1 / ((1-x)^3 - x^7).at n=34A392544