This user (ALBERT ALEXANDER STONIER) appears to have gamed the system, with fraudulent "likes" of this unremarkable solution submitted by 'sock-puppet' accounts. —DIV
Implement simple rotation cypher
Is it an Armstrong number?
Vectors counting by 2
Flip the vector from right to left
Determine whether a vector is monotonically increasing
Return the 3n+1 sequence for n
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