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A106576
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Period 20. Sequence gives last digit of A106157, starting from the first positive term.
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0
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1, 2, 1, 2, 3, 6, 3, 6, 5, 0, 5, 0, 7, 4, 7, 4, 9, 8, 9, 8, 1, 2, 1, 2, 3, 6, 3, 6, 5, 0, 5, 0, 7, 4, 7, 4, 9, 8, 9, 8, 1, 2, 1, 2, 3, 6, 3, 6, 5, 0, 5, 0, 7, 4, 7, 4, 9, 8, 9, 8, 1, 2, 1, 2, 3, 6, 3, 6, 5, 0, 5, 0, 7, 4, 7, 4, 9, 8, 9, 8, 1, 2, 1, 2, 3, 6, 3, 6, 5, 0, 5, 0, 7, 4, 7, 4, 9, 8, 9, 8, 1, 2, 1, 2, 3
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OFFSET
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0,2
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LINKS
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Index entries for linear recurrences with constant coefficients, signature (0,1,0,-1,0,1,0,-1,0,1,0,-1,0,1,0,-1,0,1).
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FORMULA
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G.f.: A/B with A = (1 +2*x +3*x^4 +4*x^13 +5*x^8 +6*x^5 +7*x^12 +8*x^17 +9*x^16) and B = (1-x)*(1+x)*(1 -x +x^2 -x^3 +x^4)*(1 +x +x^2 +x^3 +x^4)*(1 -x^2 +x^4 -x^6 +x^8).
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MATHEMATICA
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PadRight[{}, 120, {1, 2, 1, 2, 3, 6, 3, 6, 5, 0, 5, 0, 7, 4, 7, 4, 9, 8, 9, 8}] (* Harvey P. Dale, Apr 21 2019 *)
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CROSSREFS
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KEYWORD
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easy,nonn,base
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AUTHOR
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STATUS
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approved
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