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Search: id:A122759
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| A122759 |
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Cantor based power of three triangular array: t(n,m)=3^n*(1-Mod[n,2]). |
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1
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| 1, 0, 0, 1, 3, 9, 0, 0, 0, 0, 1, 3, 9, 27, 81, 0, 0, 0, 0, 0, 0, 1, 3, 9, 27, 81, 243, 729, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 9, 27, 81, 243, 729, 2187, 6561, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 9, 27, 81, 243, 729, 2187, 6561, 19683, 59049
(list; table; graph; listen)
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OFFSET
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1,5
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REFERENCES
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Counterexamples in Topology by Lynn Arthur Steen and J. Arthur Seebach, Jr., Dover, New York,1978,57-58
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FORMULA
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t(n,m)=3^n*(1-Mod[n,2])
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EXAMPLE
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1
0, 0
1, 3, 9
0, 0, 0, 0
1, 3, 9, 27, 81
0, 0, 0, 0, 0, 0
1, 3, 9, 27, 81, 243, 729
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MATHEMATICA
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a[n_] := 1 - Mod[n, 2] T1[n_, m_] := 3^n*a[m] a0 = Table[Table[T1[n, m], {n, 0, m}], {m, 0, 10}]; Flatten[a0] MatrixForm[a0]
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CROSSREFS
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Sequence in context: A063103 A058847 A088110 this_sequence A016626 A126321 A021260
Adjacent sequences: A122756 A122757 A122758 this_sequence A122760 A122761 A122762
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KEYWORD
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nonn,tabl,uned
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AUTHOR
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Roger Bagula (rlbagulatftn(AT)yahoo.com), Sep 21 2006
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