Signed primes: if prime(n) even, a(n) = 0; if prime(n) == 1 (mod 4), a(n) = prime(n); if prime(n) == -1 (mod 4), a(n) = -prime(n).
A073579
Signed primes: if prime(n) even, a(n) = 0; if prime(n) == 1 (mod 4), a(n) = prime(n); if prime(n) == -1 (mod 4), a(n) = -prime(n).
Terms
- a(0) =0a(1) =-3a(2) =5a(3) =-7a(4) =-11a(5) =13a(6) =17a(7) =-19a(8) =-23a(9) =29a(10) =-31a(11) =37a(12) =41a(13) =-43a(14) =-47a(15) =53a(16) =-59a(17) =61a(18) =-67a(19) =-71a(20) =73a(21) =-79a(22) =-83a(23) =89a(24) =97a(25) =101a(26) =-103a(27) =-107a(28) =109a(29) =113
External references
- oeis: A073579