In sequence of odd primes add 1 to first prime, 3rd prime, 5th prime, ... then subtract 1 from 2nd prime, fourth prime, sixth prime and so on.
A014687
In sequence of odd primes add 1 to first prime, 3rd prime, 5th prime, ... then subtract 1 from 2nd prime, fourth prime, sixth prime and so on.
Terms
- a(0) =4a(1) =4a(2) =8a(3) =10a(4) =14a(5) =16a(6) =20a(7) =22a(8) =30a(9) =30a(10) =38a(11) =40a(12) =44a(13) =46a(14) =54a(15) =58a(16) =62a(17) =66a(18) =72a(19) =72a(20) =80a(21) =82a(22) =90a(23) =96a(24) =102a(25) =102a(26) =108a(27) =108a(28) =114a(29) =126
External references
- oeis: A014687