A177444 Triangle by columns, (1, 1, 0, 1, 0, 0, 0, ...); shifted down twice for columns > 0.

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

Offset

0,1

Comments

Let the triangle = M. Limit_{n->infinity} M^n = A120562, the left-shifted vector

considered as a sequence.

Links

Table of n, a(n) for n=0..65.

Formula

As an infinite lower triangular matrix, (1, 1, 0, 1, 0, 0, 0, ...) in every

column, prefaced with k zeros.

Example

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

Crossrefs

Cf. A120562, A177445.

Sequence in context: A353663 A260595 A328102 * A325896 A239200 A157686

Adjacent sequences: A177441 A177442 A177443 * A177445 A177446 A177447

Keyword

nonn,tabl

Author

Gary W. Adamson, May 08 2010

Status

approved