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Search: id:A144464
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| A144464 |
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Triangle T(n,m) read by rows: T(n,m) = 2^min(m,n-m). |
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+0
4
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| 1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 4, 2, 1, 1, 2, 4, 4, 2, 1, 1, 2, 4, 8, 4, 2, 1, 1, 2, 4, 8, 8, 4, 2, 1, 1, 2, 4, 8, 16, 8, 4, 2, 1, 1, 2, 4, 8, 16, 16, 8, 4, 2, 1, 1, 2, 4, 8, 16, 32, 16, 8, 4, 2, 1
(list; graph; listen)
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OFFSET
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0,5
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FORMULA
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Row sums: sum_{m=0..n} T(n,m) = A027383(n).
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EXAMPLE
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The triangle starts in row n=0 as:
{1},
{1, 1},
{1, 2, 1},
{1, 2, 2, 1},
{1, 2, 4, 2, 1},
{1, 2, 4, 4, 2, 1},
{1, 2, 4, 8, 4, 2, 1},
{1, 2, 4, 8, 8, 4, 2, 1},
{1, 2, 4, 8, 16, 8, 4, 2, 1},
{1, 2, 4, 8, 16, 16, 8, 4, 2, 1},
{1, 2, 4, 8, 16, 32, 16, 8, 4, 2, 1}
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MATHEMATICA
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Clear[f, t]; f[n_, m_] = If[m <= Floor[n/2], m, n - m]; Table[Table[f[n, m], {m, 0, n}], {n, 0, 10}]; Flatten[%]
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CROSSREFS
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Sequence in context: A110537 A144434 A159936 this_sequence A138015 A103444 A099172
Adjacent sequences: A144461 A144462 A144463 this_sequence A144465 A144466 A144467
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KEYWORD
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nonn,easy
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AUTHOR
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Roger L. Bagula and Gary W. Adamson (rlbagulatftn(AT)yahoo.com), Oct 09 2008
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EXTENSIONS
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Offset corrected by the Associate Editors of the OEIS, Sep 11 2009
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