A204433 - OEIS

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A204433

Symmetric matrix: f(i,j) = (2*i + 2*j + 2) mod 3, by antidiagonals.

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

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

A block matrix over {0,1,2}. See A204263 for a guide to related matrices and permanents.

LINKS

Table of n, a(n) for n=1..99.

EXAMPLE

Northwest corner:

0 2 1 0 2 1

2 1 0 2 1 0

1 0 2 1 0 2