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A283683 Unique sequence with a(1)=0, a(2)=1, representing an array T(i,j) read by antidiagonals in which every row is this sequence itself. 6
0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1

COMMENTS

All terms are either 0 or 1. 1's are always isolated (i.e., never adjacent). There are arbitrarily long runs of consecutive 0's (see A283325).

LINKS

Ivan Neretin, Table of n, a(n) for n = 1..26796 (corrected by Ray Chandler, Jan 19 2019)

EXAMPLE

The sequence begins: 0, 1, 0, 0, 1, 0, 0, 0, 1, 0...

It represents a rectangular array read by downward antidiagonals. Each row of the array is this sequence itself:

0 1 0 0 1 0...

0 1 0 0 1...

0 1 0 0...

0 1 0...

0 1...

0...

...

MATHEMATICA

Nest[Flatten@Table[#[[n - i]], {n, Length[#] + 1}, {i, n - 1}] &, {0, 1}, 4]

CROSSREFS

Cf. A283681, A283682.

Sequence in context: A179828 A129184 A129185 * A118605 A175253 A163584

Adjacent sequences:  A283680 A283681 A283682 * A283684 A283685 A283686

KEYWORD

nonn,tabl,nice

AUTHOR

Ivan Neretin, Mar 14 2017

STATUS

approved

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Last modified June 4 05:19 EDT 2020. Contains 334815 sequences. (Running on oeis4.)