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Search: id:A090172
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| A090172 |
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Triangle read by rows, related to Pascal's triangle read mod 2. |
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+0
4
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| 1, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 0
(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. 2.
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FORMULA
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a(n, k) = A091562(n, k) mod 2.
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EXAMPLE
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1; 0,0; 1,1,1; 1,0,0,1; 0,1,1,1,0; ...
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CROSSREFS
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Row sums: A091563. Cf. A007318, A083093, A090171-A090174.
Sequence in context: A030300 A072770 A071674 this_sequence A014061 A014053 A014037
Adjacent sequences: A090169 A090170 A090171 this_sequence A090173 A090174 A090175
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KEYWORD
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nonn,easy,tabl
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AUTHOR
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njas, Jan 19 2004
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EXTENSIONS
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Edited and extended by Christian G. Bower (bowerc(AT)usa.net), Jan 20 2004
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