A129573 A097806 * A129372.

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

Offset

1,1

Links

Andrew Howroyd, Table of n, a(n) for n = 1..1275 (rows 1..50)

Formula

A097806 * A129372 as infinite lower triangular matrices.

Example

First few rows of the triangle are:
  1;
  1, 1;
  1, 1, 1;
  1, 0, 1, 1;
  1, 0, 0, 1, 1;
  1, 1, 0, 0, 1, 1;
  1, 1, 0, 0, 0, 1, 1;
  1, 0, 0, 0, 0, 0, 1, 1;
  ...

Prog

(PARI) T(n, k)=(n%k==0 && n/k%2) || ((n-1)%k==0 && (n-1)/k%2) \\ Andrew Howroyd, Aug 10 2018

Crossrefs

Row sums are A129574.

Cf. A129572, A129372, A097806.

Sequence in context: A075743 A136705 A141646 * A330887 A181652 A071024

Adjacent sequences: A129570 A129571 A129572 * A129574 A129575 A129576

Keyword

nonn,tabl

Author

Gary W. Adamson, Apr 22 2007

Extensions

Duplicate a(35) removed and terms a(56) and beyond from Andrew Howroyd, Aug 10 2018

Status

approved