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A177207
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Triangle read by rows: R(n,k) = 2^(n-k) mod n.
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0
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0, 0, 1, 1, 2, 1, 0, 0, 2, 1, 1, 3, 4, 2, 1, 2, 4, 2, 4, 2, 1, 1, 4, 2, 1, 4, 2, 1, 0, 0, 0, 0, 0, 4, 2, 1, 4, 2, 1, 5, 7, 8, 4, 2, 1, 2, 6, 8, 4, 2, 6, 8, 4, 2, 1, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1, 8, 4, 8, 4, 8, 4, 8, 4, 8, 4, 2, 1, 1, 7, 10, 5, 9, 11, 12, 6, 3, 8, 4, 2, 1, 2, 8, 4, 2, 8, 4, 2, 8, 4, 2, 8, 4, 2, 1
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,5
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LINKS
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EXAMPLE
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Triangle begins:
0;
0, 1;
1, 2, 1;
0, 0, 2, 1;
1, 3, 4, 2, 1;
2, 4, 2, 4, 2, 1;
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MATHEMATICA
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Array[PowerMod[2, # - Range[#], #] &, 15] (* Paolo Xausa, Jun 28 2024 *)
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PROG
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(PARI) row(n) = vector(n, k, lift(Mod(2, n)^(n-k))); \\ Michel Marcus, Jun 27 2024
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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