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Search: id:A090044
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| A090044 |
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Triangle read by rows: T(n,k) = A083093 with 1's and 2's interchanged. |
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+0
3
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| 2, 2, 2, 2, 1, 2, 2, 0, 0, 2, 2, 2, 0, 2, 2, 2, 1, 2, 2, 1, 2, 2, 0, 0, 1, 0, 0, 2, 2, 2, 0, 1, 1, 0, 2, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 1, 2, 0, 0, 0, 0, 0, 0, 2, 1, 2, 2, 0, 0, 2, 0, 0, 0, 0, 0, 2, 0, 0, 2, 2, 2, 0, 2, 2, 0, 0, 0, 0, 2, 2, 0, 2, 2
(list; table; graph; listen)
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OFFSET
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0,1
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REFERENCES
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Y. Moshe, The density of 0's in recurrence double sequences, J. Number Theory, 103 (2003), 109-121; see Fig. 1.
Y. Moshe, The distribution of elements in automatic double sequences, Discr. Math., 297 (2005), 91-103.
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FORMULA
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The negative of Pascal's triangle read mod 3.
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EXAMPLE
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2; 2,2; 2,1,2; 2,0,0,2; ...
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MATHEMATICA
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-Mod[ Flatten[ Table[ Binomial[n, k], {n, 0, 13}, {k, 0, n}]], -3] (from Robert G. Wilson v Jan 19 2004)
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CROSSREFS
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Cf. A007318, A083093.
Sequence in context: A057155 A037812 A037200 this_sequence A036238 A063982 A055020
Adjacent sequences: A090041 A090042 A090043 this_sequence A090045 A090046 A090047
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KEYWORD
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nonn,tabl,easy
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AUTHOR
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njas, Jan 19 2004
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EXTENSIONS
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Extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 19 2004
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