a(n) = floor((3rd elementary symmetric function of 2,3,...,n+3) / (2nd elementary symmetric function of 2,3,...,n+3) ).
A024180
a(n) = floor((3rd elementary symmetric function of 2,3,...,n+3) / (2nd elementary symmetric function of 2,3,...,n+3) ).
Terms
- a(0) =0a(1) =2a(2) =3a(3) =5a(4) =7a(5) =10a(6) =13a(7) =16a(8) =20a(9) =24a(10) =28a(11) =32a(12) =37a(13) =42a(14) =48a(15) =54a(16) =60a(17) =67a(18) =74a(19) =81a(20) =88a(21) =96a(22) =104a(23) =113a(24) =122a(25) =131a(26) =141a(27) =151a(28) =161a(29) =171
External references
- oeis: A024180