In sequence of prime numbers add 1 to first prime, 3rd prime, fifth prime, ... then subtract 1 from 2nd prime, fourth prime, sixth prime and so on.
A014686
In sequence of prime numbers add 1 to first prime, 3rd prime, fifth prime, ... then subtract 1 from 2nd prime, fourth prime, sixth prime and so on.
Terms
- a(0) =3a(1) =2a(2) =6a(3) =6a(4) =12a(5) =12a(6) =18a(7) =18a(8) =24a(9) =28a(10) =32a(11) =36a(12) =42a(13) =42a(14) =48a(15) =52a(16) =60a(17) =60a(18) =68a(19) =70a(20) =74a(21) =78a(22) =84a(23) =88a(24) =98a(25) =100a(26) =104a(27) =106a(28) =110a(29) =112
External references
- oeis: A014686