a(n) = floor((4th elementary symmetric function of S(n))/(3rd elementary symmetric function of S(n))), where S(n) = {first n+3 positive integers congruent to 1 mod 3}.
A024224
a(n) = floor((4th elementary symmetric function of S(n))/(3rd elementary symmetric function of S(n))), where S(n) = {first n+3 positive integers congruent to 1 mod 3}.
Terms
- a(0) =0a(1) =2a(2) =4a(3) =7a(4) =11a(5) =16a(6) =22a(7) =28a(8) =35a(9) =43a(10) =51a(11) =60a(12) =70a(13) =81a(14) =93a(15) =105a(16) =118a(17) =132a(18) =146a(19) =161a(20) =177a(21) =194a(22) =212a(23) =230a(24) =249a(25) =269a(26) =289a(27) =310a(28) =332a(29) =355
External references
- oeis: A024224