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

A024398

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

Terms

    a(0) =0a(1) =1a(2) =4a(3) =8a(4) =14a(5) =22a(6) =31a(7) =41a(8) =53a(9) =67a(10) =82a(11) =98a(12) =116a(13) =136a(14) =157a(15) =179a(16) =203a(17) =229a(18) =256a(19) =284a(20) =314a(21) =346a(22) =379a(23) =413a(24) =449a(25) =487a(26) =526a(27) =566a(28) =608a(29) =652

External references