a(n) = [ (3rd elementary symmetric function of S(n))/(2nd elementary symmetric function of S(n)) ], where S(n) = {first n+2 positive integers congruent to 2 mod 3}.
A024401
a(n) = [ (3rd elementary symmetric function of S(n))/(2nd elementary symmetric function of S(n)) ], where S(n) = {first n+2 positive integers congruent to 2 mod 3}.
Terms
- a(0) =1a(1) =3a(2) =6a(3) =11a(4) =16a(5) =22a(6) =30a(7) =38a(8) =47a(9) =58a(10) =69a(11) =81a(12) =95a(13) =109a(14) =124a(15) =141a(16) =158a(17) =176a(18) =196a(19) =216a(20) =237a(21) =260a(22) =283a(23) =307a(24) =333a(25) =359a(26) =386a(27) =415a(28) =444a(29) =474
External references
- oeis: A024401