Are you sure about the first rule? It doesn't seem necessary according to https://oeis.org/A014575.
The problem is really fun.
Since I created the problem series and want the Functions I badge, I thought I'd provide the solution that incorporates vampire_factor and are_fangs. Not a great score, but readable!
Sorry, I mean the Magic Numbers badge.
Make an awesome ramp for a tiny motorcycle stuntman
"Low : High - Low : High - Turn around " -- Create a subindices vector
Create matrix of replicated elements
find radius of cone
Negation the hard way
Fangs of a vampire number
Outer product of multiple vectors
Find all vampire fangs
Multivariate polynomials - overload multiplication
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