Convert n from degrees Fahrenheit to nearest integer Celsius.

Terms

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