84854domain: NAppears in sequencesa(n) = floor(C(n,4)/5).at n=58A011795a(n) = [ (3rd elementary symmetric function of S(n))/(first elementary symmetric function of S(n)) ], where S(n) = {first n+2 positive integers congruent to 1 mod 3}.at n=20A024220a(n) = binomial(5*n+8, 4)/5 for n >= 0.at n=10A238473