This is totally a personal thing with me, but some numbers are just more pleasing to me visually than others.
For instance, number 1-12 are all fine. But 13 & 14 I dont like. 15 is fine, but 16-19 don't do much for me. 20-25 are good, but 26-28 I don't like. 29-36 I like, but 37 & 38 I don't, but I like 39 and hate 40, but I like 41, 42, hate 43, but like 44.
Yes, I am most likely mad as a hatter.