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Search: id:A090174
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| A090174 |
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Triangle read by rows, related to Pascal's triangle read mod 2. |
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+0
6
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| 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1
(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) = A091533(n, k) mod 2.
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EXAMPLE
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1; 1,1; 0,1,0; 1,1,1,1; 1,1,1,1,1; ...
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CROSSREFS
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Row sums: A091564. Cf. A007318, A083093, A090171-A090173.
Sequence in context: A139312 A071041 A140074 this_sequence A165556 A127243 A127248
Adjacent sequences: A090171 A090172 A090173 this_sequence A090175 A090176 A090177
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KEYWORD
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nonn,easy,tabl
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Jan 19 2004
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EXTENSIONS
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Edited and extended by Christian G. Bower (bowerc(AT)usa.net), Jan 19 2004
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