a(n) = floor( (2nd elementary symmetric function of S(n))/(first elementary symmetric function of S(n)) ), where S(n) = {first n+1 positive integers congruent to 1 mod 3}.

A024219

a(n) = floor( (2nd elementary symmetric function of S(n))/(first elementary symmetric function of S(n)) ), where S(n) = {first n+1 positive integers congruent to 1 mod 3}.

Terms

    a(0) =0a(1) =3a(2) =7a(3) =12a(4) =19a(5) =28a(6) =38a(7) =49a(8) =62a(9) =77a(10) =93a(11) =110a(12) =129a(13) =150a(14) =172a(15) =195a(16) =220a(17) =247a(18) =275a(19) =304a(20) =335a(21) =368a(22) =402a(23) =437a(24) =474a(25) =513a(26) =553a(27) =594a(28) =637a(29) =682

External references