A129565 A115359 * A000012 as infinite lower triangular matrices.

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

Offset

1,1

Comments

Row sums = A026741: (1, 1, 3, 2, 5, 3, 7, 4, 9, 5, ...).

Links

Table of n, a(n) for n=1..55.

Formula

A115359 * A000012 as infinite lower triangular matrices. Odd rows: n 1's; even rows, n/2 zeros followed by n/2 1's.

Example

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

Crossrefs

Cf. A115359, A000012, A026741.

Sequence in context: A153639 A319102 A103582 * A225145 A121967 A356310

Adjacent sequences: A129562 A129563 A129564 * A129566 A129567 A129568

Keyword

nonn,tabl

Author

Gary W. Adamson, Apr 21 2007

Extensions

Name corrected by Gary W. Adamson, Mar 14 2011

Status

approved