A128185 A097806 * A051731.

1, 2, 1, 2, 1, 1, 2, 1, 1, 1, 2, 1, 0, 1, 1, 2, 1, 1, 0, 1, 1, 2, 1, 1, 0, 0, 1, 1, 2, 1, 0, 1, 0, 0, 1, 1, 2, 1, 1, 1, 0, 0, 0, 1, 1, 2, 1, 1, 0, 1, 0, 0, 0, 1, 1

Offset

1,2

Comments

A128184 = A051731 * A097806 Row sums = 1, 3, 4, 5, 5, 6, 6, 6, 7, 7, ... (the first 10 terms of A108852).

Links

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

Formula

A097806 * A051731 as infinite lower triangular matrices.

Example

First few rows of the triangle:
  1;
  2, 1;
  2, 1, 1;
  2, 1, 1, 1;
  2, 1, 0, 1, 1;
  2, 1, 1, 0, 1, 1;
  2, 1, 1, 0, 0, 1, 1;
  2, 1, 0, 1, 0, 0, 1, 1;
  ...

Crossrefs

Cf. A128184, A097806, A051731, A108852.

Sequence in context: A081653 A249615 A096860 * A375491 A175244 A206722

Adjacent sequences: A128182 A128183 A128184 * A128186 A128187 A128188

Keyword

nonn,tabl

Author

Gary W. Adamson, Feb 17 2007

Status

approved