n-th prime minus its ternary (base 3) reversal.

Terms

a(0) =0a(1) =2a(2) =-2a(3) =2a(4) =-8a(5) =0a(6) =-8a(7) =8a(8) =0a(9) =-26a(10) =-6a(11) =6a(12) =-26a(13) =-6a(14) =-14a(15) =-26a(16) =-6a(17) =14a(18) =26a(19) =-6a(20) =38a(21) =26a(22) =-80a(23) =-128a(24) =-48a(25) =-80a(26) =-24a(27) =-128a(28) =24a(29) =-80