Abs(*+-) n Sequence.

Terms

a(0) =1a(1) =2a(2) =5a(3) =1a(4) =15a(5) =9a(6) =16a(7) =65a(8) =56a(9) =66a(10) =166a(11) =154a(12) =167a(13) =336a(14) =321a(15) =337a(16) =593a(17) =575a(18) =594a(19) =955a(20) =934a(21) =956a(22) =1440a(23) =1416a(24) =1441a(25) =2066a(26) =2039a(27) =2067a(28) =2851a(29) =2821