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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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3
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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; refs; listen; history; internal format)
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OFFSET
| 0,1
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REFERENCES
| 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
| a(n, k) = A091562(n, k) mod 2.
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EXAMPLE
| 1; 0,0; 1,1,1; 1,0,0,1; 0,1,1,1,0; ...
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CROSSREFS
| Row sums: A091563. Cf. A007318, A083093, A090171-A090174.
Sequence in context: A168394 A072770 A071674 * A154272 A014061 A014053
Adjacent sequences: A090169 A090170 A090171 * A090173 A090174 A090175
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KEYWORD
| nonn,easy,tabl
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jan 19 2004
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EXTENSIONS
| Edited and extended by Christian G. Bower (bowerc(AT)usa.net), Jan 20 2004
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