A235022 Number of (n+1) X (4+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

4704, 15572, 51220, 170568, 569352, 1912444, 6442252, 21811720, 74044552, 252514496, 863227916, 2963538436, 10196465900, 35222100660, 121914919708, 423563796488, 1474316189604, 5149747271896, 18019152344164, 63258132957568

Offset

1,1

Links

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

Example

Some solutions for n=4:
  3 4 3 4 2      0 1 3 1 0      1 0 4 0 1      1 0 4 5 1
  4 2 4 2 3      1 5 4 5 1      5 1 2 1 5      0 2 3 1 0
  5 0 5 0 4      0 1 3 1 0      4 3 1 3 4      2 1 5 0 2
  3 1 3 1 2      5 3 2 3 5      2 4 5 4 2      1 3 4 2 1
  1 2 1 2 0      1 2 4 2 1      4 3 1 3 4      0 5 3 4 0

Crossrefs

Column 4 of A235026.

Sequence in context: A114568 A251135 A237699 * A223246 A330836 A107544

Adjacent sequences: A235019 A235020 A235021 * A235023 A235024 A235025

Keyword

nonn

Author

R. H. Hardin, Jan 02 2014

Status

approved