A290452 Triangle formed by reading the triangle of Eulerian numbers (A173018) mod 2.

1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0

Offset

0

Comments

Apart from a shift in indexing, this is identical to Pascal's triangle mod 2, A047999.

Links

Table of n, a(n) for n=0..90.

Example

Triangle begins:
1,
1, 0,
1, 1, 0,
1, 0, 1, 0,
1, 1, 1, 1, 0,
1, 0, 0, 0, 1, 0,
1, 1, 0, 0, 1, 1, 0,
1, 0, 1, 0, 1, 0, 1, 0,
1, 1, 1, 1, 1, 1, 1, 1, 0,
1, 0, 0, 0, 0, 0, 0, 0, 1, 0,
1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0,
1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0,
1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0,
...

Crossrefs

For the Eulerian triangle itself see A008292, A123125, A173018.

For the version in A173018 read mod m for m=2 through 10 see A290452-A290460. See also A047999.

Sequence in context: A136442 A168030 A128431 * A215200 A054521 A349221

Adjacent sequences: A290449 A290450 A290451 * A290453 A290454 A290455

Keyword

nonn,tabl

Author

N. J. A. Sloane, Aug 05 2017

Status

approved