**Number of functions f:[n]->[n] such that f[(x^2) mod n]=[f(x)^2] mod n for all x in [n], for n=1,2,3,... Here [n] denotes {0,1,2,...,n-1}.**

*1, 4, 6, 16, 18, 576, 78, 172*

*2 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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