a(n) = [ (3rd elementary symmetric function of P(n))/(first elementary symmetric function of P(n)) ], where P(n) = {1, p(1), p(2), ..., p(n-1)}, where p(0) = 1.

A024532

a(n) = [ (3rd elementary symmetric function of P(n))/(first elementary symmetric function of P(n)) ], where P(n) = {1, p(1), p(2), ..., p(n-1)}, where p(0) = 1.

Terms

    a(0) =1a(1) =5a(2) =19a(3) =56a(4) =137a(5) =297a(6) =567a(7) =1013a(8) =1751a(9) =2810a(10) =4393a(11) =6597a(12) =9457a(13) =13196a(14) =18148a(15) =24593a(16) =32403a(17) =42218a(18) =54109a(19) =68001a(20) =84810a(21) =104543a(22) =127997a(23) =156197a(24) =188684a(25) =225197a(26) =266657a(27) =312693a(28) =364374a(29) =426707

External references