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A070445
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a(n) = n^2 mod 23.
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2
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0, 1, 4, 9, 16, 2, 13, 3, 18, 12, 8, 6, 6, 8, 12, 18, 3, 13, 2, 16, 9, 4, 1, 0, 1, 4, 9, 16, 2, 13, 3, 18, 12, 8, 6, 6, 8, 12, 18, 3, 13, 2, 16, 9, 4, 1, 0, 1, 4, 9, 16, 2, 13, 3, 18, 12, 8, 6, 6, 8, 12, 18, 3, 13, 2, 16, 9, 4, 1, 0, 1, 4, 9, 16, 2, 13, 3, 18, 12, 8, 6, 6, 8, 12, 18, 3, 13, 2, 16
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OFFSET
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0,3
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LINKS
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Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
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FORMULA
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a(n+23) = a(n).
G.f.: (1 +3*x +6*x^2 +10*x^3 -8*x^4 +21*x^5 -18*x^6 +36*x^7 -24*x^8 +32*x^9 -26*x^10 +32*x^11 -24*x^12 +36*x^13 -18*x^14 +21*x^15 -8*x^16 +10*x^17 +6*x^18 +3*x^19 +x^20)*x*(1+x)/(1-x^23). (End)
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MATHEMATICA
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PROG
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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