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A090172 Triangle read by rows, related to Pascal's triangle read mod 2. 3
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; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..104.

Y. Moshe, The density of 0's in recurrence double sequences, J. Number Theory, 103 (2003), 109-121; see Fig. 2.

FORMULA

a(n, k) = A091562(n, k) mod 2.

EXAMPLE

1; 0,0; 1,1,1; 1,0,0,1; 0,1,1,1,0; ...

CROSSREFS

Row sums: A091563. Cf. A007318, A083093, A090171-A090174.

Sequence in context: A168394 A072770 A071674 * A284369 A194661 A285427

Adjacent sequences:  A090169 A090170 A090171 * A090173 A090174 A090175

KEYWORD

nonn,easy,tabl

AUTHOR

N. J. A. Sloane, Jan 19 2004

EXTENSIONS

Edited and extended by Christian G. Bower, Jan 20 2004

STATUS

approved

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Last modified July 22 20:51 EDT 2019. Contains 325226 sequences. (Running on oeis4.)