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A268240
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Pascal's tetrahedron of trinomial coefficients (A046816) read mod 2.
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2
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1, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0
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COMMENTS
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Might be called Sierpinski's tetrahedron, by analogy with A047999.
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LINKS
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MAPLE
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end proc:
seq(seq(seq(A268240(i, j, k), j=0..i), i=0..k), k=0..8);
MC:=(i, j, k) -> (i+j+k)!/(i!*j!*k!);
PT:=proc(n) local T, i, j, k; T:=0;
for i from n by -1 to 0 do
for j from n-i by -1 to 0 do lprint((MC(i, j, n-i-j) mod 2)); od: od: end;
for n from 0 to 8 do lprint("n=", n); PT(n); od:
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CROSSREFS
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KEYWORD
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nonn,tabf
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AUTHOR
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STATUS
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approved
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