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A130175
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2n+1 appears (last digit of 2n+1) times .
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1
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1, 3, 3, 3, 5, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7, 7, 9, 9, 9, 9, 9, 9, 9, 9, 9, 11, 13, 13, 13, 15, 15, 15, 15, 15, 17, 17, 17, 17, 17, 17, 17, 19, 19, 19, 19, 19, 19, 19, 19, 19, 21, 23, 23, 23, 25, 25, 25, 25, 25, 27, 27, 27, 27, 27, 27, 27, 29, 29, 29, 29, 29, 29, 29, 29, 29, 31, 33, 33
(list;
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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LINKS
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FORMULA
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a(n) = a(n-1) + a(n-25) - a(n-26) for n > 26. - Robert Israel, Jun 09 2023
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MAPLE
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seq((2*m+1)$(2*m+1 mod 10), m=0..100); # Robert Israel, Jun 09 2023
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MATHEMATICA
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Table[Table[n, {Mod[n, 10]}], {n, 1, 35, 2}]//Flatten (* Harvey P. Dale, Apr 24 2018 *)
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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