A234906 - OEIS

A234906

Number of (n+1) X (2+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

1720, 12336, 88092, 692608, 5287952, 42777680, 333040552, 2723879976, 21343299552, 175549177208, 1379240212124, 11389288475912, 89624213348668, 742558641862440, 5850433339736772, 48618109622714396, 383454721019056852

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

OFFSET

1,1

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 87

FORMULA

Empirical recurrence of order 87 (see link above).

EXAMPLE

Some solutions for n=3:

6 3 1 6 4 7 0 2 0 2 4 0 1 5 4 7 5 6 2 6 3

7 5 4 5 2 4 3 6 5 4 7 4 0 3 1 1 0 2 0 3 1