n - reversal of base 8 digits of n (written in base 10).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =7a(9) =0a(10) =-7a(11) =-14a(12) =-21a(13) =-28a(14) =-35a(15) =-42a(16) =14a(17) =7a(18) =0a(19) =-7a(20) =-14a(21) =-21a(22) =-28a(23) =-35a(24) =21a(25) =14a(26) =7a(27) =0a(28) =-7a(29) =-14