No the tones are not eveny spaced. Here are the required tones and associated value of the w1 variable.

CTCSS W1

1 67 14925
2 71.9 13908
3 77 12987
4 82.5 12121
5 88.5 11299
6 94.8 10549
7 100 10000
8 103.5 9662
9 107.2 9328
10 110.9 9017
11 114.8 8711
12 118.8 8418
13 123 8130
14 127.3 7855
15 131.8 7587
16 136.5 7326
17 141.3 7077
18 146.2 6840
19 151.4 6605
20 156.7 6382
21 162.2 6165
22 167.9 5956
23 173.8 5754
24 179.9 5559
25 186.2 5371
26 192.8 5187
27 203.5 4914
28 210.7 4746
29 218.1 4585
30 225.7 4431
31 233.6 4281
32 241.8 4136
33 250.3 3995