

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
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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



