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1, 2, 1, 2, 0, 0, 1, 2, 1, 0, 1, 0, 1, 2, 1, 0, 2, 2, 2, 2, 2, 2, 2, 2, 3, 0, 3, 0, 3, 2, 0, 2, 1, 2, 1, 2, 1, 2, 2, 2, 3, 0, 0, 2, 0, 2, 1, 2, 3, 0, 0, 0, 0, 2, 2, 0, 0, 2, 1, 2, 2, 0, 0, 2, 3, 0, 1, 0, 2, 0, 1, 0, 1, 0, 3, 2, 1, 0, 1, 0, 2, 2, 1, 2, 0, 0, 1, 2, 3, 0, 0, 2, 0, 2, 2, 0, 3, 0, 1, 0, 2, 2, 3, 0, 1
(list;
graph;
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) = A000712(n-1)(mod 4). - _John M. Campbell_, Jul 16 2016
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MAPLE
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A000041 := proc(n) combinat[numbpart](n) ; end: A040051 := proc(n) option remember ; A000041(n) mod 2 ; end: A108802 := proc(n) option remember ; add( A040051(i)*A040051(n-i-1), i=0..n-1) ; end: A108803 := proc(n) A108802(n) mod 4 ; end: for n from 1 to 140 do printf("%d, ", A108803(n)) ; od ; # _R. J. Mathar_, May 08 2007
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MATHEMATICA
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Function[w, Mod[ListConvolve[#, #], 4] & /@ Map[Take[w, #] &, Range@ Length@ w]]@ Table[Mod[PartitionsP@ n, 2], {n, 0, 105}] // Flatten (* _Michael De Vlieger_, Jul 16 2016 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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_N. J. A. Sloane_, Jul 09 2005
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EXTENSIONS
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More terms from _R. J. Mathar_, May 08 2007
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STATUS
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approved
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