n-th prime minus its reversal.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =-18a(6) =-54a(7) =-72a(8) =-9a(9) =-63a(10) =18a(11) =-36a(12) =27a(13) =9a(14) =-27a(15) =18a(16) =-36a(17) =45a(18) =-9a(19) =54a(20) =36a(21) =-18a(22) =45a(23) =-9a(24) =18a(25) =0a(26) =-198a(27) =-594a(28) =-792a(29) =-198